Malicious PDF — malware analysis report

Static analysis result for SHA-256 554eb515b4dcbd12…

MALICIOUS

PDF

38.8 KB Authoring application: Scribus
MD5: e7286731623ede3c18ca7ddcb6e1c398 SHA-1: 9f40fa87c7846bfe2640eb8d32450da43c895bf3 SHA-256: 554eb515b4dcbd12e44dfe4cf82cd51f39626675a8d8dbbaec26d623d847bb20
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics, including PDF_SEO_LINK_FARM and ClamAV detection for phishing. The ML classifier also assigned a high probability of maliciousness. The document body contains numerous embedded URLs, with the primary domain being dutikexoj.kafasso.by, which is indicative of a link farm designed to redirect users to potentially malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://dutikexoj.kafasso.by/uploads/2020/01/28/4212923.pdf
    • http://mutiny-cannabis.com/uploads/1/3/0/3/130379492/828428.pdf
    • http://lsboudoirlondon.co.uk/uploads/1/3/0/2/130289494/xezovakifado.pdf
    • http://bribrisboutique.com/uploads/1/3/0/5/130538840/5534795.pdf
    • http://kdpublishers.com/uploads/1/3/0/4/130483498/pebelogunokilirox.pdf
    • http://xugip.asdklo.xyz/uploads/2020/01/28/mivuto_xuzamoviduramo_wanulugug_luxagujugirepa.pdf
    • http://cityonloc.com/uploads/1/3/0/2/130288514/130288514.html#smoky+mountain+national+park+hiking+guide

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012c2.bin
fa517d3b209006a0502d399fb8240310a469eda8f63c7c3e09ad775ac62ec21b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C2 8000 bytes

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