Malicious PDF — malware analysis report

Static analysis result for SHA-256 01cb6d79b5f90f75…

MALICIOUS

PDF

99.9 KB Created: 2021-07-05 05:55:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e65192f8afe0fd1324e3945722c853ee SHA-1: f88a2894a006d1a2066ec77abf802457d7ecc097 SHA-256: 01cb6d79b5f90f75792939054b6ae0e070f3f39b1ca14a95b1baa0c9c68dfcdb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple compromised WordPress upload storage locations and other disposable hosting sites. The primary goal appears to be to lure users to these compromised sites, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9737

Heuristics 6

  • 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.
  • 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://camgloberealtor.com/userfiles/file/rodozabojasaloku.pdf In PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/5d5df950a118ac665644b77e0f65ed00/75711337148.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160976918787ff---79639319488.pdfIn PDF document text
    • https://nocenzura.space/web/img/podborky/files/17641223520.pdfIn PDF document text
    • https://aartipalette.com/userfiles/file/39611431757.pdfIn PDF document text
    • http://chickendaylacrescenta.com/uploads/files/26067656582.pdfIn PDF document text
    • http://roocenter.ru/upload/file/weregugelekot.pdfIn PDF document text
    • http://brandiassociati.it/userfiles/file/jikojisajuxigimozurofi.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a77115149f---65383254682.pdfIn PDF document text
    • http://kipia-nn.ru/userfiles/file/56212497500.pdfIn PDF document text
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c91749e7b34---46206210609.pdfIn PDF document text
    • http://01host.ru/userfiles/files/14924370126.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9d963f9a3---kolamawinadil.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/e35529c0474737a280b845e356aaa914/mifoxufomolisitisazevete.pdfIn PDF document text
    • https://angkorphotographyguide.com/userfiles/file/fofarewumigoxuxivimoro.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/ee24e1dfceb7fdf171804861554d0b4a/12069022937.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160a3bd4f147dd---41915331807.pdfIn PDF document text
    • http://mazurubezpieczenia.pl/zdjecia/fck/file/37747461791.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/b6pp3ijhmtsi0umkdq5v567l67/95332407504.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160abf1c5530b5---natubexubisir.pdfIn PDF document text
    • http://thaoduocvn.com/userfiles/image/file/76953193002.pdfIn PDF document text
    • http://aire-limpio.com/img/editor/file/museziganaxepigebasizabas.pdfIn PDF document text
    • https://juniorclublivorno.com/sitonews/images_upload/files/novujifawejunitovum.pdfIn PDF document text
    • https://digireg.it/upload/lumorunelojoparozorase.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=the+meaning+of+crescendoPDF 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
font_00_sfnt_off0000eb2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2A 22492 bytes
SHA-256: fc660a9d70864dd786c84d2987b664a44a65985e50720bd6f427a59c22867b6d
font_01_sfnt_off0001245a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1245A 10744 bytes
SHA-256: 7d22dd8552de2bc5d62acaeb2364fc78db5dfa7d52ea5dd1b8e0180cd327ef6a
font_02_sfnt_off00013c99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C99 16628 bytes
SHA-256: 0efd0cf6760b035c2c73ff247b36c6d1243eb451cd927d125249308c89d6efa8
font_03_sfnt_off00015444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15444 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_04_sfnt_off00016c51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C51 5376 bytes
SHA-256: 1b5c4c2571cace558ec4c3c83a6460209c9624c230e3e6eac73f508d339593c4

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