Malicious PDF — malware analysis report

Static analysis result for SHA-256 867fd6ecc4ef9d6d…

MALICIOUS

PDF

35.8 KB Authoring application: Poppler-utils First seen: 2021-10-04
MD5: 226fc64aacc11556e1699090c60fc39c SHA-1: 3e604656f9e2944c884478891e6e06565b2915d1 SHA-256: 867fd6ecc4ef9d6d510645a6eb1080bd56a0b8ff68883e27c533bb10e6561965
152 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://birminghamconcreteremoval.com/uploads/1/3/0/6/130620910/mepisadaramulizawow.pdf In PDF document text
    • http://sfchampions.com/uploads/1/3/0/4/130489361/6248217.pdfIn PDF document text
    • http://cowle.de/uploads/1/3/0/5/130544034/nizadonuba-wofipim-tidulakiv.pdfIn PDF document text
    • http://cmajor7music.com/uploads/1/3/0/2/130271111/2728e247b0db.pdfIn PDF document text
    • http://belliesandbundle.com/uploads/1/3/0/5/130548152/478845d3bf.pdfIn PDF document text
    • http://lutokose.remontbroker.ru/uploads/2020/01/29/1022076.pdfIn PDF document text
    • http://adventureswithrocks.com/uploads/1/3/0/7/130740062/130740062.html#programme+musculation+3+fois+par+semIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F4 8300 bytes
SHA-256: db892ab8ba620f241d69872f914312fef5e02fe9637ef514f24ff2df8afb0d8b

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