Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9629c4326e8fd00…

MALICIOUS

PDF

67.5 KB Authoring application: Nitro PDF
MD5: c26f01597d20eef4e550c2f265af5628 SHA-1: 8bba2e94bc75ee1ae023f7d33cee48114b3e4d6e SHA-256: c9629c4326e8fd00c5527750a3cb96966e7996ca2807b5cbc5cfe42b888b8245
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 further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body's mention of the FIFA World Cup is a common lure to attract user attention.

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://freebetdirectory.com/uploads/1/3/0/5/130540477/3eb9e2.pdf
    • http://kraimgroup.com/uploads/1/3/0/6/130604198/de42426f3a.pdf
    • http://2ourhealth.net/uploads/1/3/0/8/130815093/65c3ebe.pdf
    • http://norawahlbrink.com/uploads/1/3/0/2/130270889/3759460.pdf
    • http://raphel.com/uploads/1/3/0/3/130313748/6650501.pdf
    • http://soulspeakmarketing.com/uploads/1/3/0/6/130639300/e0f096c73a771af.pdf
    • http://ecolevandyke.com/uploads/1/3/0/2/130272406/597104.pdf
    • http://nbc-heads-up-poker.com/uploads/1/3/0/6/130620840/2a95aa3f5f.pdf
    • http://drdenisemlowe.net/uploads/1/3/0/2/130273913/3ff516802db7ede.pdf
    • http://davidbergmann.com/uploads/1/3/0/6/130605048/fewilikugugi_jurenixofuv_vakomuzosug.pdf
    • http://bbnla.com/uploads/1/3/0/4/130488698/gimixuvag.pdf
    • http://misssoutheastpageantry.us/uploads/1/3/0/2/130291523/130291523.html#fifa+world+cup+2018+all+team+group

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012ff.bin
e4e67a2f10a6d78d8d4b356971f4c7a50333571a5b9c35197d7e58b9b74773e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x12FF 8640 bytes