Malicious PDF — malware analysis report

Static analysis result for SHA-256 859382068204224b…

MALICIOUS

PDF

33.6 KB Authoring application: Solid Converter PDF
MD5: ed8a796586412043a0f192724d475868 SHA-1: 4894a66c212cdeae6711e65c7d64483a302c80f3 SHA-256: 859382068204224ba6bb365d5bd2bab69ee59be2b06c2996cacd2c85e3caf5bd
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to other PDF files. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically related to phishing or traffic redirection. The embedded URLs are the primary indicators of compromise, likely serving as lures for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://matthewschwartz.org/uploads/1/3/0/6/130604086/tewuzezifovagapa.pdf
    • https://rekitefi.weebly.com/uploads/1/3/0/2/130270985/d374e2c66a68.pdf
    • http://medrano-homes-construction.com/uploads/1/3/0/2/130287261/pexuzogor.pdf
    • http://vukuvazaje.epiccams.online/uploads/2020/01/28/f98988068d.pdf
    • http://bridges2magic.com/uploads/1/3/0/5/130588762/10138303bec95.pdf
    • http://ndchair.com/uploads/1/3/0/4/130477170/130477170.html#noun+clauses+adalah

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011e1.bin
ccbd36381fcc761a5d7a6c93e4063d48b4c312b42eb9646d66036be2ff650f49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E1 7828 bytes

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