Malicious PDF — malware analysis report

Static analysis result for SHA-256 de9233c1b2e5ecf9…

MALICIOUS

PDF

74.8 KB Created: 2021-06-04 08:15:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50094aa599b2ab6dec694e1656508e38 SHA-1: 61427ed9a415bfd19c737556529c50ad49ae8d55 SHA-256: de9233c1b2e5ecf903ab99bc30ae93127e44b07a6e4b6eeeb78906349603f0e1
154 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to other PDF files, suggesting a link farm or redirection mechanism. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. The embedded URLs are used to redirect the user to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8823

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://drafthe.ru/pbw?utm_term=autocad+2010+commands+with+examples+pdf
    • https://static.s123-cdn-static.com/uploads/4463286/normal_5ffbbe843d14a.pdf
    • https://cdn-cms.f-static.net/uploads/4370985/normal_6033cb1b54aee.pdf
    • https://cdn-cms.f-static.net/uploads/4470221/normal_60420acb07cc5.pdf
    • https://domekemukud.weebly.com/uploads/1/3/5/3/135327345/05bf334fc1.pdf
    • https://cdn-cms.f-static.net/uploads/4499283/normal_603fdcfa76ca7.pdf
    • https://cdn-cms.f-static.net/uploads/4444856/normal_602b41037c7be.pdf
    • https://wotipivas.weebly.com/uploads/1/3/1/4/131482993/5260940.pdf
    • https://dikodaselafilug.weebly.com/uploads/1/3/4/1/134108642/0b0b742d6c.pdf
    • https://static.s123-cdn-static.com/uploads/4475000/normal_5fc7db79ecc22.pdf
    • https://static.s123-cdn-static.com/uploads/4416150/normal_5ff1de643445d.pdf
    • https://cdn-cms.f-static.net/uploads/4485714/normal_6057bbbc46650.pdf
    • https://cdn-cms.f-static.net/uploads/4383913/normal_603edfaed49d6.pdf
    • https://xesisezedowajax.weebly.com/uploads/1/3/4/7/134729639/bb4f5bc.pdf
    • https://cdn-cms.f-static.net/uploads/4416666/normal_6017dd49b2cd7.pdf
    • https://static.s123-cdn-static.com/uploads/4446782/normal_5fe09afcaa438.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dajodovilav.pbworks.com/w/file/fetch/144564600/gafokagowus.pdf
    • http://bujolajoxek.pbworks.com/w/file/fetch/144528417/20702248862.pdf
    • http://wejojixi.pbworks.com/w/file/fetch/144424014/dedutuxinigudukalopezuze.pdf
    • http://watusuxipidu.pbworks.com/w/file/fetch/144423495/different_kind_of_depression_medicine.pdf
    • http://xuruzinijub.pbworks.com/f/la_tejedora_de_la_muerte_libro_completo_descargar_gratis.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000109f1.bin
bec8e2478381845c5d76e9efa36266064bfb4f47bf00a3247abac52e41762168		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109F1 5776 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.