Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b2ea09f7bdecdd…

MALICIOUS

PDF

34.5 KB Authoring application: Scribus
MD5: 4b3da092563faba651c2746026441443 SHA-1: 2c96a39d0bf8743b64daee456270f53265983342 SHA-256: 68b2ea09f7bdecddad8eac9574ef00e6ab504c530fe49962147001ec7fb4bb20
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links to other PDF files, a technique often used for SEO poisoning or to distribute further malware. ClamAV detected this file as Pdf.Phishing.TtraffRobotInstall-7605656-0, and a machine learning classifier also flagged it as malicious. The embedded URLs likely lead to malicious content or further infection vectors.

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://lgnrg.net/uploads/1/3/0/7/130739740/zewoxefa.pdf
    • http://douxoverdesign.com/uploads/1/3/0/2/130273616/b8714f2.pdf
    • http://chargeteck.com/uploads/1/3/0/4/130488940/sirob_nobufen_pafil_wofaz.pdf
    • http://untdnatives.com/uploads/1/3/0/6/130620613/869c003f6d4fa9.pdf
    • http://stakemycoins.com/uploads/1/3/0/4/130488294/4421755.pdf
    • http://mtglend.net/uploads/1/3/0/4/130477309/bba9d.pdf
    • http://tophatalgarve.com/uploads/1/3/0/2/130270804/8560447.pdf
    • http://newstylemarket.com/uploads/1/3/0/7/130739433/130739433.html#aide+pdf+to+dwg+converter+12.0+++portable

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012c7.bin
faa966e20a7fcb1197b06d412b47fde97783f2df37d1fe23a9290aa660d6e6de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C7 8660 bytes

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