Malicious PDF — malware analysis report

Static analysis result for SHA-256 92f6d7cd5c530696…

MALICIOUS

PDF

62.3 KB Created: 2021-03-17 18:50:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3326cb967d7d6634af741a52afdb5ce0 SHA-1: 82127332e379b90b89903cdffebc9030df9d9396 SHA-256: 92f6d7cd5c530696eb2081a47af59af1d9dcb710833b31faf9ebb3d7ce24cc59
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO poisoning tactic. The ML classifier and ClamAV detection indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7344

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jumiwimov.ru/award?keyword=determination+of+calorific+value+of+fuel+pdf PDF link annotation
    • https://nokibuvekunel.weebly.com/uploads/1/3/1/1/131164430/7972784.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/jiOibhg/13565120251.pdfIn PDF document text
    • http://pawelemofub.iblogger.org/stephen_hawking_final_book_amazon.pdfIn PDF document text
    • https://bejobofilu.weebly.com/uploads/1/3/0/8/130814531/eae0d4eabde.pdfIn PDF document text
    • https://cdn.sqhk.co/joninopi/yhiicw6/83167193286.pdfIn PDF document text
    • https://xavujome.weebly.com/uploads/1/3/0/7/130739328/tibupigofakafup.pdfIn PDF document text
    • https://cdn.sqhk.co/gejupajo/gh4FYha/ruvuralizatej.pdfIn PDF document text
    • https://sunejojixin.weebly.com/uploads/1/3/1/0/131071277/2768712.pdfIn PDF document text
    • https://pulijapejupexeb.weebly.com/uploads/1/3/4/0/134041872/5582800.pdfIn PDF document text
    • https://cdn.sqhk.co/sekigozujeme/yjagegc/25798596201.pdfIn PDF document text
    • https://cdn.sqhk.co/getabemuto/3fkNZ1Y/51186905545.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/Hb2VhcX/how_to_change_my_voicemail_number_on_iphone.pdfIn PDF document text
    • https://vugifalufaduzo.weebly.com/uploads/1/3/4/8/134889855/8037568.pdfIn PDF document text
    • http://tikolikenugim.epizy.com/zenadoduvejam.pdfIn PDF document text
    • http://jowunimigafej.rf.gd/5374656294.pdfIn PDF document text
    • http://zoketuru.epizy.com/71790830918.pdfIn PDF document text
    • https://70848fb0-0fd0-490a-9360-2ffa38fc212c.filesusr.com/ugd/08e331_ab12986702f34a7caf95105dfd0b443a.pdf?index=trueIn PDF document text
    • https://bdf1a075-95da-4d9c-a64e-c4f1d9865a87.filesusr.com/ugd/bcd086_ef9b3bdabeb54c5cbd0a487aa2ab9150.pdf?index=trueIn PDF document text
    • https://21a67f6d-2aea-439f-a910-ed4feb6be009.filesusr.com/ugd/173616_add45f9357924d8b8637752cb6265166.pdf?index=trueIn PDF document text
    • https://746420f6-3007-491b-ba72-fd43be5094e5.filesusr.com/ugd/277b62_c73d22bdb4fa41c28a2d2de3b7915c9e.pdf?index=trueIn PDF document text

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