Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ebea12b9e6f8261…

MALICIOUS

PDF

48.9 KB Authoring application: Pdftk
MD5: e83c3cb8502fd04a64f833e0e33cc8f3 SHA-1: 46e3657702eb1c13c82f203c96d329652bcc3da6 SHA-256: 3ebea12b9e6f8261f2dfec2269a586ee310f45300e6de89b7bb76e477d191dfb
152 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0 and a machine learning classifier. A critical heuristic identified a link farm containing 14 external PDF links, with the first being http://bellovaporizer.com/uploads/1/3/0/2/130289241/tosilap.pdf. The document body contains text related to business plans and includes multiple embedded URLs, reinforcing the phishing or SEO spam lure. The primary attack pattern involves directing users to a network of potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://bellovaporizer.com/uploads/1/3/0/2/130289241/tosilap.pdf
    • http://toxicologist-katie-chiang.com/uploads/1/3/0/6/130620934/6566475.pdf
    • http://omt�nk.se/uploads/1/3/0/4/130436028/b3cb8bd97.pdf
    • https://tixubanuridukif.weebly.com/uploads/1/3/0/3/130379204/8355621.pdf
    • http://votebyronmartin.com/uploads/1/3/0/5/130545784/sewuzejuvepa.pdf
    • http://polarlondon.com/uploads/1/3/0/5/130545189/nufawazejigisevik.pdf
    • http://4lifemovement.org/uploads/1/3/0/3/130379409/gozibewez_suzapixab.pdf
    • http://absystemsllcscam.com/uploads/1/3/0/6/130604972/130604972.html#one+page+business+case+template+doc

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001179.bin
8deaf7237e829ebab359a6cc40dcbaf104510cf19ccaae6550c8e576c68e4c98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1179 8468 bytes
font_01_sfnt_off00007987.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7987 16036 bytes

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