Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3944428a077b40f…

MALICIOUS

PDF

38.7 KB Authoring application: PDFedit
MD5: 201d9eb847891d73e5d83172cb9d14d9 SHA-1: a280671fecf8610e39a5d81e59fce0b35ee79bb3 SHA-256: c3944428a077b40f113fdbe481783205626c645c1641ca9ad2ce6b8856cf79d6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. No scripts were extracted from this sample, but the extensive link farm suggests a phishing or content distribution vector.

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://miamitownshiphealthandwellnesscenter.com/uploads/1/3/0/4/130476597/paxifuruvowe.pdf
    • http://we-have-hope.com/uploads/1/3/0/6/130605388/7235866.pdf
    • http://myresumebuilder123.com/uploads/1/3/0/5/130588487/eeb69c4995d31e.pdf
    • http://stagelife918.com/uploads/1/3/0/7/130739127/lubusi.pdf
    • http://bloodsugarbikemagic.com/uploads/1/3/0/3/130313215/5694917.pdf
    • http://saverioesara.com/uploads/1/3/0/5/130539244/7998089.pdf
    • http://andreamingels.com/uploads/1/3/0/4/130435937/tudisesu.pdf
    • http://mpunlimited.com/uploads/1/3/0/8/130813652/1097740.pdf
    • http://zankpos.com/uploads/1/3/0/3/130323571/907372.pdf
    • http://lucernecountryclubrvpark.com/uploads/1/3/0/5/130551023/gapaxanubuxupe.pdf
    • http://mymagnificentmess.com/uploads/1/3/0/6/130640020/riwazeletidoretuges.pdf
    • http://botoxduluth.com/uploads/1/3/0/4/130436285/dilivij.pdf
    • http://chewoncakes.com/uploads/1/3/0/2/130288557/130288557.html#adductor+muscles+tendonitis+treatment

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012d4.bin
92558361c2446cc74943ff4987d4afa830ea23fbc29b41db655eb954f3d07fcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D4 7764 bytes

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