Malicious PDF — malware analysis report

Static analysis result for SHA-256 3932154341831a89…

MALICIOUS

PDF

38.2 KB Authoring application: Solid Converter PDF
MD5: bcca4c36692fc4c1f442c682d3b30ff0 SHA-1: 508a5eb1710830eacb5e8a07ba133fd97dfb3d75 SHA-256: 3932154341831a897f7de36e8b4f5f9b0f625c6f2238b83c05cd2186886c5def
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs are the primary IOCs, suggesting a phishing or content distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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
  • 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://sepiat.one/uploads/1/3/0/6/130621397/7655928.pdf
    • http://moldasti.store/uploads/1/3/0/4/130478772/1ac08e.pdf
    • http://soulrock.org/uploads/1/3/0/4/130476270/3891562.pdf
    • http://sanfrancisco-interactivehypnotherapy.com/uploads/1/3/0/5/130588693/1222520.pdf
    • http://artofmoses.com/uploads/1/3/0/5/130589401/2359987.pdf
    • http://bordercollieevents.nl/uploads/1/3/0/3/130379351/8289819.pdf
    • http://orphancaresolutions.com/uploads/1/3/0/4/130490386/bibakor.pdf
    • http://karraschconsulting.com/uploads/1/3/0/6/130621404/7211657.pdf
    • http://mypccontractor.com/uploads/1/3/0/6/130621496/9250826.pdf
    • http://oknarkm.ru/uploads/2020/01/29/barazoda.pdf
    • http://annethielen.nl/uploads/1/3/0/7/130739889/rewefozukaregeduzevi.pdf
    • http://brisbanebirthing.com/uploads/1/3/0/4/130488935/dogafur.pdf
    • http://mikeintucson.com/uploads/1/3/0/6/130620888/130620888.html#bridesmaid+invitation+templates

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012dc.bin
d65f1e6b3d77272eb871eeedf7461a6aeb01231d70925e034c12eec2b0aae181		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12DC 8600 bytes

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