Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3639fd8914b66cd…

MALICIOUS

PDF

36.7 KB Authoring application: OpenOffice.org
MD5: b1ffd88a7b49f3024dd00da70aca4f94 SHA-1: 03264317b8e23c0a7bd5956d6ab011822b998149 SHA-256: b3639fd8914b66cdc30d5d8e954613630f24b94dd6f635ece8949032f0525bc4
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs pointing to external PDF documents. This behavior is indicative of a link farm or redirection scheme, commonly used in phishing or malware distribution campaigns. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent, likely related to traffic redirection or phishing.

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://thelohbros.com/uploads/1/3/0/4/130489386/zixukip.pdf
    • http://calvarybconline.net/uploads/1/3/0/2/130291453/vanubinafu.pdf
    • http://zipfiber.net/uploads/1/3/0/7/130740429/7084873.pdf
    • http://rideandtrain.com/uploads/1/3/0/2/130291491/900d53e165.pdf
    • http://ruthlessprogression.com/uploads/1/3/0/6/130604111/7283603.pdf
    • http://minibaraddict.com/uploads/1/3/0/7/130740349/f75ae3f9d93.pdf
    • http://mrsindler.com/uploads/1/3/0/7/130738805/zamedixulot-jerebosim-gefopifajepole-vuwunosugos.pdf
    • http://cakzglamdepo.com/uploads/1/3/0/4/130476066/8908338.pdf
    • http://reikihealing.studio/uploads/1/3/0/3/130323461/351ce.pdf
    • http://kissbotr.com/uploads/1/3/0/5/130588287/torip-dugidizedanode-gerixugafaniv-zulidolagexa.pdf
    • http://acmehempcompany.com/uploads/1/3/0/6/130604333/mepofavu.pdf
    • http://nationalfootballcheerleadersalumni.org/uploads/1/3/0/5/130551051/130551051.html#adobe+photoshop+cs3+learning+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000125f.bin
c213698479f461cc0ec3802e9de784d8dfaf86541a76d22a2d9dbe1b8fdc3a9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125F 7504 bytes

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