Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf550feca9181506…

MALICIOUS

PDF

33.5 KB Authoring application: OpenOffice Draw
MD5: ba66e28866a5c03f03344bece279287f SHA-1: 1d3ce71d727d29ee8d786e10ae5a59c38fb633a9 SHA-256: bf550feca91815060f9cf459ab3ab60ec1f510991bbd8b3813eea04deed5061f
150 Risk Score

Malware Insights

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

The PDF 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 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to the URLs, reinforcing the link-farming behavior.

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://bikinibottomboots.weebly.com/uploads/1/3/0/3/130379167/8335624.pdf
    • http://newriverknockouts.org/uploads/1/3/0/4/130484005/b2f60f45a1.pdf
    • http://thewicklowway.org/uploads/1/3/0/5/130588508/717dfab5b74e217.pdf
    • http://newpathorg.com/uploads/1/3/0/2/130270849/dojuvijevivo.pdf
    • http://bbeboutiquellc.com/uploads/1/3/0/2/130287538/78877a0566f28.pdf
    • http://stargazingangel.com/uploads/1/3/0/2/130288720/4328655.pdf
    • http://mingateachers.com/uploads/1/3/0/2/130273733/5264357.pdf
    • http://survivingmentalhealth.com/uploads/1/3/0/5/130588795/4993445.pdf
    • http://gamesplusadventure.ru/uploads/2020/01/29/b6d3f7.pdf
    • http://charunaukwal.com/uploads/1/3/0/5/130545733/418990.pdf
    • http://pornpurity.com/uploads/1/3/0/6/130620268/130620268.html#xpand+3d+glasses+manual

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001234.bin
b81f5a82bf32c91552c25d5eb87a41251640fc510c4148f58d34d31c7a30b4da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1234 8600 bytes

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