Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e0b2fa1ca3e2526…

MALICIOUS

PDF

93.2 KB Created: 2021-06-28 17:59:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 700be66093fe12041b5224f79c4a5510 SHA-1: 0f016ac572a6d32f584a5745fb608a6c02a30a59 SHA-256: 4e0b2fa1ca3e2526b98b404627a4f3ecf479edc149ba276621f4bcc1adb0a820
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a link farm pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to distribute further malicious content. The presence of embedded URLs and the heuristic for a callback lure indicate a phishing or scam attempt, likely to trick users into downloading a payload or divulging information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607c46bb12daf---71420062616.pdf In PDF document text
    • http://poltinik.ru/userfiles/file/73653301997.pdfIn PDF document text
    • https://avonsteel.com/UserFiles/file/zevirobiginewiwufijomaka.pdfIn PDF document text
    • https://www.rockfallco.com/wp-content/plugins/formcraft/file-upload/server/content/files/160723deac0830---dawaxosobexekegeke.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072846c82634---berawonitefeluvujuzelitov.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/9cmqjjv55nst97dac8u93uhd1c/47029790813.pdfIn PDF document text
    • http://abacusnancy.com/userfiles/file/gatopeladafepe.pdfIn PDF document text
    • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/0ef5dd74bd0cc446990f827307c3d603/20604370025.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3aadb7a64b---90884426508.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/6a479593984e59c3b279dd5393c7a8e9/60528035130.pdfIn PDF document text
    • http://e-hematologica.pl/users//file/gobiwof.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/64154a19f75018cb1425f634733d882a/77636323898.pdfIn PDF document text
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/0dfc69b87b632154defed22272fa6d3d/mejesonebapeki.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608513f58ce53---66567359488.pdfIn PDF document text
    • https://solener.info/ckfinder/userfiles/files/vedesuja.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160933c2f6c6dc---81765318238.pdfIn PDF document text
    • https://ppuhperspektywa.pl/files/edytor/file/karotenok.pdfIn PDF document text
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/ae9b3c7f0d9aa68c00c5e30be7a9769b/giwudopifibupax.pdfIn PDF document text
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/19a8bd90f557fde2ce1377df0ecdc47f/rujiwijow.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/aef6212811d02d4ceb97817d9d21f909/98435115052.pdfIn PDF document text
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093a9e00d9f3---42975591015.pdfIn PDF document text
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f9003adb8f---dozunox.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=can+narcissists+love+their+childPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A91 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000122a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122A8 10564 bytes
SHA-256: 68a797ba60b060fe5b1354ce11f6d79e899a6f3bf55c4a8448ca46230655fb82
font_02_sfnt_off00013abf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13ABF 17352 bytes
SHA-256: cca82e31608b83c8031b54c887062115e4c4a21257ccdc14b84882aa4e0d81c2

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