Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bad931171638723…

MALICIOUS

PDF

42.0 KB Authoring application: ImageMagick
MD5: fa9c0af9741488e03332dc8d81fd71c7 SHA-1: 4075c1aafe462bfce40b2059e6c2a2f909a6e8b9 SHA-256: 2bad931171638723e8805145a6e02b2321913a9393b0f8b5095f6a3747074760
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to other PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV also flagged this file as malicious. The embedded URLs suggest a phishing or SEO manipulation campaign, aiming to direct users to a network of potentially malicious content.

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://coinsofthetrade.com/uploads/1/3/0/4/130476700/zamodelal_nokote.pdf
    • http://usedmetalbuildings.net/uploads/1/3/0/6/130639888/94b487ff.pdf
    • http://crispcleaningservice.com/uploads/1/3/0/5/130550867/2d850f.pdf
    • http://allaymedicinal.com/uploads/1/3/0/3/130379081/1012328.pdf
    • http://newkindlife.com/uploads/1/3/0/2/130274028/lumezorigubos.pdf
    • http://psychotherapeute-paris.net/uploads/1/3/0/6/130620268/d59d903a0ad6.pdf
    • http://policetrailer.com/uploads/1/3/0/5/130590287/130590287.html#access+control+in+information+security+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000128e.bin
d97032a4311a74f4002d22ee4dc3fffb1b2eb02b6863f7f2c55936887a7826b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x128E 7536 bytes
font_01_sfnt_off00005e0b.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E0B 16036 bytes

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