Malicious PDF — malware analysis report

Static analysis result for SHA-256 955cd510d57b45b5…

MALICIOUS

PDF

84.6 KB Created: 2020-12-26 17:12:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: b5b36d7d718f02189723bb5ddfaed79f SHA-1: 777771e267746ea0998606e9e9e5c09d0f245283 SHA-256: 955cd510d57b45b5abdfaf9ce4e54d6885ab2b7eb3fe8f2da0064815d259d363
154 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to Weebly-hosted PDFs with numeric or generic slugs, indicative of a link farm or SEO poisoning tactic. The ClamAV detection and ML classifier also flagged this file as malicious, specifically as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest an attempt to redirect users to malicious sites, likely for further payload delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8304

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://trafffi.ru/aws?utm_term=hatha+yoga+asanas+pdf PDF link annotation
    • https://jafadunew.weebly.com/uploads/1/3/4/6/134632108/bopef-zizuz-limobe.pdfIn PDF document text
    • https://cdn.sqhk.co/samivegin/igjhjhg/gtr_drift_simulator_apk.pdfIn PDF document text
    • https://linezajokopu.weebly.com/uploads/1/3/4/6/134629872/9738331.pdfIn PDF document text
    • https://cdn.sqhk.co/buwowunuras/icOLgjn/lilesidogijufibukopedide.pdfIn PDF document text
    • https://gemefakopegixi.weebly.com/uploads/1/3/4/3/134309359/383120.pdfIn PDF document text
    • https://lawejuja.weebly.com/uploads/1/3/0/7/130740077/e20d51625bf4b.pdfIn PDF document text
    • https://wugepazi.weebly.com/uploads/1/3/4/3/134348030/3394555.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/wolawatin/36959266234.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/2102745758.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/99417269363.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/kunulorugigufur.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/32426272565.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F5E 5240 bytes
SHA-256: 62be955f5565ec64be2640590d57cf940ea054e17878d6323987b56800331afd
font_01_sfnt_off00012141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12141 11968 bytes
SHA-256: 134aae0091627a96cda739520b53193a81d44e156276a0e61c5658a5b7233ce6

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