Malicious PDF — malware analysis report

Static analysis result for SHA-256 089da522b9fe6132…

MALICIOUS

PDF

91.9 KB Created: 2021-06-28 19:55:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 04db547284b658752df18beeafdef2ed SHA-1: 0f700bed085f175f40e15f9e5aefbac919a600aa SHA-256: 089da522b9fe6132006a95c0f98eb53605aa459d6ace11e7e116600b220bbff1
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites hosting PDF files. Heuristics indicate this is a link farm designed to direct users to potentially malicious content. ClamAV detection and ML classification further support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9932

Heuristics 7

  • 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.
  • 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 http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/lkqml8c82dlj76c20m0di18i80/farudedewek.pdf In PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/4aaqu5ehtrmmfbqcvvfshr8jh2/63244599077.pdfIn PDF document text
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093aa8794bd9---luzepowazadofovuzomixox.pdfIn PDF document text
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/42df53082c66be48bd7a691c2af71914/keronilakorebiluleg.pdfIn PDF document text
    • http://blpest.com/UserFiles/file/76901512928.pdfIn PDF document text
    • https://bisnismedsos.com/userfiles/file/65801553430.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/65lhf6lre592quesl8ir1endt3/70231874034.pdfIn PDF document text
    • http://poltinik.ru/userfiles/file/rabawumodowugiris.pdfIn PDF document text
    • https://tramtron.vn/uploads/files/files/13908219903.pdfIn PDF document text
    • https://remoteworkerclub.com/wp-content/plugins/super-forms/uploads/php/files/c6a9548e251c0f3fff0719de68461999/60075328514.pdfIn PDF document text
    • http://varanini.pl/userfiles/file/2069036702.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/7e686fbe1a4de3ec11c7f41248c231cf/xawakaxevedaj.pdfIn PDF document text
    • http://thomasbelldescendants.com/clients/40432/File/92265122307.pdfIn PDF document text
    • https://journeywithmypet.com/ckfinder/userfiles/files/51581815235.pdfIn PDF document text
    • http://onlineexpert.in/userfiles/file/potoxamit.pdfIn PDF document text
    • http://sowitech.vn/upload/files/lijag.pdfIn PDF document text
    • https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/978c0d2e4e6396f1d7162aefd067c130/42296415506.pdfIn PDF document text
    • https://rockyshairsalon.com/wp-content/plugins/super-forms/uploads/php/files/4vr3vbti16vb4din9194uve07o/fupenutokivogixewopu.pdfIn PDF document text
    • http://geoass.eu/userfiles/files/mexijofelapi.pdfIn PDF document text
    • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7b318e41d4---43299230853.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/160982afaa8fa4---fofuvasimuleme.pdfIn PDF document text
    • http://ndt-tl.ru/upload/file/34608358048.pdfIn PDF document text
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/dabd8ca0b4581c96220a12f6f19e7446/zomojogutarogonu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=automatic+tapping+pro+apkPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000114bf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x114BF 18192 bytes
SHA-256: 6e46cc73f54c34e2d37436d0d95d704099af1830735fe86bf28ab6e95f26e77a
font_00_sfnt_off0000e5d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D4 17776 bytes
SHA-256: 26b7e3396c41f30d22b2d56c4098dd8aa75a37bd361229fd4b58bee6d2d2d3e3
font_02_sfnt_off0001318d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1318D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off000149a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x149A4 10544 bytes
SHA-256: 327f92a6472b9f87152ee230c01762f57d29c70f4974b005760b8492f6f4f161

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