Malicious PDF — malware analysis report

Static analysis result for SHA-256 282171f57d3f8e1c…

MALICIOUS

PDF

42.5 KB Authoring application: Inkscape
MD5: 2666932998154ec9c4fe2e702966e51a SHA-1: 9bd238559a89dd412422ce25c6169969ebc61475 SHA-256: 282171f57d3f8e1c4bc6cd08628014bd608b774cb4c3e110bf3052714773ce43
152 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a common technique for SEO poisoning or directing users to malicious sites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The document body, though partially corrupted, mentions a product name and price, suggesting a lure to a fraudulent offer.

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://whosinyourtribe.com/uploads/1/3/0/4/130476721/846b1.pdf
    • http://cruisesceptic.com/uploads/1/3/0/4/130483869/lebizawarorufo-foletujulugug-jirijox-jejexafe.pdf
    • http://aclarkphotography.com/uploads/1/3/0/7/130776126/2410071.pdf
    • http://doveyjunction.com/uploads/1/3/0/7/130739479/kewisegojav.pdf
    • http://mpdesigns.studio/uploads/1/3/0/5/130550722/sufigop_tilunajo.pdf
    • http://quakestudentconferences.net/uploads/1/3/0/2/130288406/1023076.pdf
    • http://naturomedicbw.com/uploads/1/3/0/4/130489228/wekimoxonilavoton.pdf
    • http://cesttresbon.com/uploads/1/3/0/2/130271017/buwetirudejivosatisi.pdf
    • http://fancouver.org/uploads/1/3/0/3/130379206/guwenofosur_bufibiwom.pdf
    • http://www.gumbootsandpuddles.com/uploads/1/3/0/6/130640236/losuv_sowig.pdf
    • http://www.burracing.com/uploads/1/3/0/8/130813084/130813084.html#cafeteira+dolce+gusto+lumio+branca

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e4c.bin
ced3cd21c11a56eb244c09388c204385ab5351e3dac3eb286bd8f5bef9d846ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E4C 9968 bytes

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