Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d43b4a10c4c6abf…

MALICIOUS

PDF

101.5 KB Authoring application: ImageMagick
MD5: 998cdad190bcb48244a0b4fe163bdb55 SHA-1: ebb97a6de44c4973d0ea14f836df3b1e4a087aee SHA-256: 1d43b4a10c4c6abf169e59d5e0d65ccaad88f7ca25e7fc556cc3124fd6f45866
150 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0 and a machine learning classifier. A critical heuristic identified a large number of external PDF links, with the first URL being http://seanhaseymassage.com/uploads/1/3/0/5/130588796/gujosegezulerebe.pdf. This suggests the document is part of a link farm or phishing campaign designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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://seanhaseymassage.com/uploads/1/3/0/5/130588796/gujosegezulerebe.pdf
    • http://saloteflorist.com/uploads/1/3/0/6/130604113/juduwidi.pdf
    • http://hugwear.net/uploads/1/3/0/7/130775476/1477921.pdf
    • http://daarna.be/uploads/1/3/0/5/130589207/571eb3.pdf
    • http://dippedbytoria.com/uploads/1/3/0/5/130589373/lulow_pinapesej_zipajipaxifapuz_jigijatavog.pdf
    • http://riversidecountyhistory.org/uploads/1/3/0/8/130873870/130873870.html#activemq+example+in+apache+camel

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011d5.bin
3f415c8ef3c771a23a60ca1ac3eef58888411bf19ac60641cd9ea7c37e83cd03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D5 8960 bytes

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