Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a160a08a80fcbd1…

MALICIOUS

PDF

69.6 KB Created: 2021-01-08 15:14:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 3da45abe40128b71af4c518dcda44ba3 SHA-1: 69f4a5957f68789114a5c78a45b2acd8d446f9f7 SHA-256: 0a160a08a80fcbd140c1bc5337903de91740d50625bc109b568ad4b866744504
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many pointing to Weebly and cdn.sqhk.co domains, which is indicative of a link farm. The ClamAV detection and ML classifier strongly suggest malicious intent, specifically a phishing or trojan distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs point towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9588

Heuristics 4

  • 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.
  • 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://traffset.ru/aws?utm_term=ausformulierter+lebenslauf+muster+jura PDF link annotation
    • https://rotolakudezi.weebly.com/uploads/1/3/4/0/134041133/nufolidibimufir.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/JCjcOV4/67900866417.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/Mhdhdjj/38852372479.pdfIn PDF document text
    • https://cdn.sqhk.co/gafokoru/bib4Ejg/petrochemical_engineering_course_outline_knust.pdfIn PDF document text
    • https://cdn.sqhk.co/javijaxim/iCic4jj/4528623076.pdfIn PDF document text
    • https://cdn.sqhk.co/tupipitijil/qAhiRie/17865244372.pdfIn PDF document text
    • https://pigukoziluluz.weebly.com/uploads/1/3/4/8/134896600/69182d.pdfIn PDF document text
    • https://cdn.sqhk.co/vujixete/YsMzgPL/falling_in_reverse_songs_download.pdfIn PDF document text
    • https://cdn.sqhk.co/wodigajamu/bjcNeji/feeling_alone_positive_quotes.pdfIn PDF document text
    • https://likizosuzi.weebly.com/uploads/1/3/4/8/134886942/pajunokuzof.pdfIn PDF document text
    • https://cdn.sqhk.co/ludozenidi/kibigWF/tinuxakitamenadalufipam.pdfIn PDF document text
    • https://bituxusod.weebly.com/uploads/1/3/4/3/134347303/fenudejuwuzu-susalifi-butiget.pdfIn PDF document text
    • https://labajilawuja.weebly.com/uploads/1/3/1/4/131406369/mewesan.pdfIn PDF document text
    • https://cdn.sqhk.co/rubekafux/jePHiii/jovezerunodo.pdfIn PDF document text
    • https://cdn.sqhk.co/fujalapevame/jgfbibr/wovesojiteka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e454bdd1-8bd1-493f-b1da-904b8b93c790/c_tic_tac_toe_ai.pdfIn PDF document text

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