Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fa3f79d7e21331c…

MALICIOUS

PDF

27.9 KB Authoring application: Soda PDF
MD5: 746f77fd74b357405590271f4e4b8829 SHA-1: 25d1123fd8b7e9412a8565cbc6079db3393c502b SHA-256: 0fa3f79d7e21331c27a6fd3b66acbe92697c93a61cbf6ca32381cf5ec82dc967
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by multiple heuristics and a machine learning classifier, specifically flagged as a phishing lure. The document body contains numerous embedded URLs that point to external PDF files, suggesting a link farm designed to redirect users to malicious content. The presence of a screenshot lure further supports the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 27 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 http://www.quiz.faithbiblecamp.com/uploads/1/3/0/4/130477702/40e82840b15a8.pdf
    • http://nomadicfield.com/uploads/1/3/0/7/130775845/528fcb6.pdf
    • http://cpsaltlakecity.com/uploads/1/3/0/4/130483924/e50f5.pdf
    • http://sazmode.com/uploads/1/3/0/7/130738482/jawugiwopez.pdf
    • http://mheseries.com/uploads/1/3/0/2/130272362/2505974.pdf
    • http://bslartquilts.com/uploads/1/3/0/5/130551523/5853950.pdf
    • http://putakings.com/uploads/1/3/0/4/130476389/b960d24c.pdf
    • http://gotcertifications.com/uploads/1/3/0/7/130739505/towazozo.pdf
    • http://ronstpierre.com/uploads/1/3/0/7/130738553/lewekufemodili.pdf
    • http://justscarves.net/uploads/1/3/0/7/130738960/vovagobakebifuxusazu.pdf
    • http://missourichapter7.com/uploads/1/3/0/2/130291328/327418.pdf
    • http://defense-elec-corp.com/uploads/1/3/0/8/130874455/1530622.pdf
    • http://wcd-wbjrziop.mgh-r.ch/uploads/1/3/0/5/130539886/130539886.html#asus+router+rt-ac88u+manual

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001d1f.bin
564bf1934a3f20c5284a7d8680fa52cdadc381a8c20019c25df4389a1e9ac906
pdf-font-stream PDF embedded font (sfnt) at offset 0x1D1F 5152 bytes