Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee9acba9e8491d1d…

MALICIOUS

PDF

58.9 KB Created: 2021-06-24 16:03:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3085dee99ebb2a136b56b33a158a923a SHA-1: a0b3b013621ee5692dd51ab47f2890caaf2221a9 SHA-256: ee9acba9e8491d1dcf07f0f425d2d1378adfe164af813ea0f3edd3e12c88cb5a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised WordPress sites, suggesting a link farm designed to distribute malicious content. ClamAV detection and ML classification strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are typical of phishing or malware delivery campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091f2c9356f0---noxapubilode.pdf
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16086d82e2dafe---bokufotutumoxamexu.pdf
    • https://lamaisonducoeur.ca/upload/editor/file/78185438323.pdf
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a99bd27258c---50818756146.pdf
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/9241ed0270cbade003fbb4d984d369e3/21375341653.pdf
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c983972b06---10162892520.pdf
    • http://s-privod.ru/userfiles/file/74650937017.pdf
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072a723556a3---pawonozoliwixuxo.pdf
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/6d14984e59e517e5e6ca9d53418e76e1/62877900948.pdf
    • https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/761434f5ae6bf3f76714d83fb9bed9c8/dipinu.pdf
    • https://bojovicsirogojno.com//files/fubuterevewogavifo.pdf
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/bec16c68f684d3845138aae63d6c1658/85269976031.pdf
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/l9q28pkr50ssgirn88l2q1b14l/pezopagemumuvobuguxad.pdf
    • http://aotwresort.net/ckfinder/userfiles/files/98892765828.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087e166f1a75---4393429327.pdf
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b274fa316a---xexofefu.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=invensys+ech210b+manual

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