Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3f97535aa7158b8…

MALICIOUS

PDF

58.5 KB Created: 2021-05-17 12:37:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5a3c93a0ddf6cf0c46fa024b471f861 SHA-1: 6aee9b9df0485fb1144b2f8ca1f2d2182ab47a1b SHA-256: d3f97535aa7158b84d49f155f7f398a2ab1755afbde3456d994fd00fc0fec512
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded links, many pointing to compromised WordPress sites, and one external URI that appears to be a redirector. The document body, though heavily obfuscated, suggests a lure related to Android terminal operations. The presence of multiple links and the nature of the URLs indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8323

Heuristics 5

  • 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
  • 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://pixomot.ru/uplcv?utm_term=android+terminal+chmod+operation+not+permitted
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/c091cdc47c310d6eb5777da113f639f1/45403741326.pdf
    • http://www.anjhimayath.com/upload/file/38376220518.pdf
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/d47e5fd7d0d23a6eb988f0a67a93d1df/wavarogagober.pdf
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/ffa5928f404ed47bd94775088d6357c1/8874681372.pdf
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6459c9aab---41248603103.pdf
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fdd03f0974---7156865408.pdf
    • http://aaaexpressac.com/userfiles/file/54645841552.pdf
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/c88tg6vr6967d9pl6pujnqn7f8/dikipudipifavusekepokun.pdf
    • https://grand-forge.ru/wp-content/plugins/super-forms/uploads/php/files/94b8433713a5636ec090412afcb4e7af/zisevimobaxufevaj.pdf
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607e61b0259bb---66585232161.pdf
    • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/7cd0bdd09e6eb28adc39fceafa03ea3c/kamawukusutukofij.pdf
    • https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/9ddauo0km2mrnbbcvr4in3r9gr/40954572392.pdf
    • https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/0f91463bf1b558f5bde76e50512966f9/pesevovizanorulafunesa.pdf
    • https://lea-inc.com/wp-content/plugins/super-forms/uploads/php/files/0605ec2cdf751151f24cbf16d8c1438f/64458683190.pdf
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a196807ae47---zivororuvimuref.pdf
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/483700af56d7a0d9655e88c16d26e7a4/63191891828.pdf

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