Malicious PDF — malware analysis report

Static analysis result for SHA-256 46ae8275a8facba2…

MALICIOUS

PDF

98.0 KB Created: 2021-07-04 03:14:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 3ab86e8b3d83bfd3c1683eac232bd16a SHA-1: 8b7c91fbc8e3c7a08952ead8f4c274d4a0f6930f SHA-256: 46ae8275a8facba233fc1af8aa71b8fa8ffbb9f1f4a72456e53e3f44f61b17fb
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document functions as a link farm, directing users to compromised WordPress sites and disposable hosting, likely to facilitate the download of further malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit users through deceptive links, potentially leading to malware execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9374

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160783cc3362bb---pekifodaruwagivotek.pdf In PDF document text
    • https://sankohomestay.com/userfiles/files/pajusom.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/2207394248.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/9732d08fe8bab9b0668bf4b6fc5191fd/11747477137.pdfIn PDF document text
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/e798e594484cfce79b66b06f0e79d0de/17824833262.pdfIn PDF document text
    • http://josephlillianmorrisfamily.com/clients/59960/File/82720633028.pdfIn PDF document text
    • https://vsetinrally.cz/userfiles/file/56095341054.pdfIn PDF document text
    • http://growlink.biz/userfiles/file/biwuwawovuwebubisab.pdfIn PDF document text
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/160ae355206f84---78184352196.pdfIn PDF document text
    • http://envisystem.com/upload/userfile/files/luluwuzuxozefelilosedar.pdfIn PDF document text
    • https://i3mit.com/shopadmin/upload/files/2194973192.pdfIn PDF document text
    • http://domholidays.com/userfiles/file/kigezutivijivawuz.pdfIn PDF document text
    • http://daiichilogistics.com/uploads/news_file/pebakesuxovosixir.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/bdd020af33013542d85f0c8e7d04797d/13855766599.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608b55dfe9224---12848931728.pdfIn PDF document text
    • http://przedszkolenisko.pl/userfiles/file/gujavabutefutexided.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f30769b970---valozubajulelaranirewu.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/is6ud2taodg97kkkdtn4h7lbee/25223688541.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/16089405d0c6cc---sokaponak.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098b6d1b3b39---mivolinuvewate.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b9b02fb8bfb---17744667056.pdfIn PDF document text
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b29d1172d93---kotiguwebelavufaxurige.pdfIn PDF document text
    • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092c822b6898---bosikune.pdfIn PDF document text
    • https://www.aceitedeoliva.com/wp-content/plugins/super-forms/uploads/php/files/0d3611e290ee6b6ea320731749d250c1/wiwabomubapifojezut.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608633165e5f3---dupowudugiwudezesevorawa.pdfIn PDF document text
    • https://abe-rdc.com/userfiles/file/35363866706.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=calculus+a+complete+course+9th+edition+solution+manual+pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00012274.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12274 18852 bytes
SHA-256: 5e618652b3839f02265bda18906b1e85bb5bbc07d68332bf057302cf5d933fe3
font_00_sfnt_off0000f064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF064 11184 bytes
SHA-256: 4dc0905dde426635d7a0eb44fffb1b2d12c23fd852d91b725896d5d4d7d9755f
font_01_sfnt_off00010a63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A63 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off000140e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140E7 17968 bytes
SHA-256: 70bdb52be3f17a2b0bdedaa591e0c5fad00e041c19a21311fe1a3662152238d1
font_04_sfnt_off00016f2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F2C 2224 bytes
SHA-256: f5d14d88bf47e33a4ea3d7a9d647d0304fd89b6ba88123a1037d9e71013a517f

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