Malicious PDF — malware analysis report

Static analysis result for SHA-256 c33702e5b920804f…

MALICIOUS

PDF

46.8 KB Authoring application: Solid Converter PDF
MD5: e01fabccce99c1786152cb9f66d585f0 SHA-1: 6c693d39ece0c5649fe9b44825b36863e806ddef SHA-256: c33702e5b920804f0703a63e952b2ad7750e9d665367b061142d8d0b9653ba2e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing campaign. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent. The ML classifier also strongly indicated maliciousness. The document body itself is heavily obfuscated but contains many of the same URLs found in the heuristics, reinforcing the attack pattern.

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://slimeberry.com/uploads/1/3/0/3/130312965/68a8d53d.pdf
    • http://notesfromtomorrow.com/uploads/1/3/0/2/130272389/faxaxisa.pdf
    • http://godlikemedia.com/uploads/1/3/0/2/130271212/rufeta.pdf
    • http://amourwed.tw/uploads/1/3/0/5/130547924/vavumawakumup.pdf
    • https://sexepodexuriw.weebly.com/uploads/1/3/0/3/130379183/72864aad8db.pdf
    • http://greatwebsitebuilder.com/uploads/1/3/0/2/130271124/5017018.pdf
    • http://ninthquarterproperties.com/uploads/1/3/0/3/130379548/341047cf9caa695.pdf
    • http://northwestpetsupplies.com/uploads/1/3/0/3/130379231/folanupizokolov_pagofoniv_pitenudivo.pdf
    • http://celestialsciencearomatherapy.com/uploads/1/3/0/5/130551319/1c4048f8f15c.pdf
    • http://renegadegreens.com/uploads/1/3/0/5/130546657/130546657.html#slow+blues+solo+tab

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013aa.bin
e318ee93013bbcaf5bf7f88069d584a3adfe795426791f0029b489024a030128		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13AA 8376 bytes

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