Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbc1d637577783ab…

MALICIOUS

PDF

62.1 KB Created: 2021-03-02 21:10:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 8012488c91be468ced0e9bd4e3976f30 SHA-1: 5893a13ef8aff6af0a968846d3756f15f946aa18 SHA-256: cbc1d637577783ab4e6f220d64e17d44fb167033b2cd491c86d6d41a4aa67039
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The ClamAV detection and ML classifier also flag this PDF as malicious. While no scripts were extracted, the presence of numerous external URLs points towards a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9564

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/strik?utm_term=kawasaki+engine+specs PDF link annotation
    • http://vazaferexadamaf.22web.org/dell_monitor_ax510_manual.pdfIn PDF document text
    • https://kiwosadil.weebly.com/uploads/1/3/5/3/135384828/e850c22c25.pdfIn PDF document text
    • https://voranafirodibug.weebly.com/uploads/1/3/2/6/132696030/4670539.pdfIn PDF document text
    • https://venepefo.weebly.com/uploads/1/3/4/6/134666716/17a0bd5.pdfIn PDF document text
    • https://letazofuwukuge.weebly.com/uploads/1/3/4/8/134869061/50f6ef7872568f1.pdfIn PDF document text
    • https://cdn.sqhk.co/fopeziriga/HnWghjc/46250558089.pdfIn PDF document text
    • https://cdn.sqhk.co/tavedikovo/hcjjTZh/72002520352.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fexuror/bloodborne_strength_build_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/sugesufevisinir.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/thank_you_for_waiting_for_my_reply_email.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/64135633427.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/liputa.pdfIn PDF document text
    • http://bimivopi.epizy.com/ratawe.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE011 5096 bytes
SHA-256: 9d1f7eb40a69197e4fa187d9a9f88e40f1c68748e3faab5637af44f9c0942399

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