Malicious PDF — malware analysis report

Static analysis result for SHA-256 043d2e902636b365…

MALICIOUS

PDF

35.6 KB Authoring application: Adobe PDF Library 9.0
MD5: 451f905a9882aa430e26913a909ad01b SHA-1: 85f34a17ce5a0a3a840eb99a3c0e94dfbfd5a2f2 SHA-256: 043d2e902636b365c621139a3e6bbdc1d6a73748f93683d4ba0e63e93657145c
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs disguised as IELTS essay resources, a common lure for phishing or malware distribution. The heuristic 'PDF_SEO_LINK_FARM' and ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly indicate malicious intent. While no scripts were directly extracted, the embedded URLs are the primary indicators of a malicious download or redirection scheme.

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://legoninjas.com/uploads/1/3/0/8/130814176/380216a.pdf
    • http://marmiger.com/uploads/1/3/0/4/130435688/c3564f9c4866c5e.pdf
    • http://mrswoodworth.com/uploads/1/3/0/4/130483253/gepilavaxomosu-fozuvu-fefixavemeseb.pdf
    • http://theartistdevelopmentcompany.com/uploads/1/3/0/6/130604366/judug.pdf
    • http://normaniclothing.com/uploads/1/3/0/6/130621141/3b138a1970725.pdf
    • http://thevelvetfarm.com/uploads/1/3/0/4/130483067/7091197.pdf
    • http://fergiebr.com/uploads/1/3/0/4/130476004/2848829.pdf
    • http://firstbytecoders.com/uploads/1/3/0/6/130621280/7314789.pdf
    • http://dansconcept.com/uploads/1/3/0/5/130539048/21a87e3c.pdf
    • http://renovotoys.com/uploads/1/3/0/6/130604787/vuxiwukoko.pdf
    • http://twobicycles.com/uploads/1/3/0/2/130291884/fed4333a0cb9fe8.pdf
    • http://www.ofcpineapplepoker.com/uploads/1/3/0/2/130289198/130289198.html#band+9+essays+ielts+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033f3.bin
f32ee62d2f7a8905d8952f04d0cc0c2a04ea389b8685d9aaf51bf2357107c953		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33F3 8108 bytes

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