Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce02110ccd1d6058…

MALICIOUS

PDF

64.0 KB Created: 2021-07-19 03:50:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: f54d4886a420927b38a7bc013e0b0fd6 SHA-1: ed2614c4407080f6836f51d8daabf27b04305bd3 SHA-256: ce02110ccd1d6058d7b88235de5e4c3f1f7365134ba598a812b681ea07bde4db
154 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous URLs pointing to compromised WordPress sites, a common tactic for phishing or malware distribution. The ClamAV detection and ML classifier further indicate malicious intent. The document body is unreadable, but the heuristics strongly suggest a phishing or malicious redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5245

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 http://sakaryakasaplarodasi.org/userfiles/file/96299821876.pdf In PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d9c983c24d3---lipunopidexalokotajuko.pdfIn PDF document text
    • https://corpusbg.com/files/fck/file/vuneposofomedoju.pdfIn PDF document text
    • http://www.pilonidalsinus.gen.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160762b77eb3e5---44128549393.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b830424007e---nadifekowobogojafadozew.pdfIn PDF document text
    • http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/1609b335e1076b---gegilagizosek.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac25af16077---99085940895.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e099921458---83385083470.pdfIn PDF document text
    • http://amoy-art.com/Upload/file/roxaxupapoxeveki.pdfIn PDF document text
    • http://tamker.hu/userfiles/file/91536460323.pdfIn PDF document text
    • http://coutleelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zakefi.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/b9c3edeaff51e31eaf5ce720a2fd7d40/zobenolotolomakowimudase.pdfIn PDF document text
    • http://wingprocess.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/duvopumem.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0c12336cca---kujevuzozibesop.pdfIn PDF document text
    • https://daaeportrett.no/upload/file/67444310872.pdfIn PDF document text
    • https://hgb.se/filer/file/sobexitunaleb.pdfIn PDF document text
    • http://xz-brand.com/ckfinder/userfiles/files/tatuvajevamakudibesek.pdfIn PDF document text
    • https://whiteelephant.co.in/wp-content/plugins/super-forms/uploads/php/files/0a92423f678593e2bc9891875bfae45d/lijaberolazalebuzuselaji.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160ac7780882bc---17575454699.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/d1f8cd6476e88ef8659573e2c06f85b0/63579110552.pdfIn PDF document text
    • https://designcoordinators.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608398a831b2f---75272706042.pdfIn PDF document text
    • http://gloria-eurex.com/images/blog//file/gujazuwegujuz.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/160708ba0db708---97483410147.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=strong+character+synonymsPDF link annotation

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