Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bc18a6b24bf504a…

MALICIOUS

PDF

44.5 KB Authoring application: Inkscape
MD5: de3dc4ec1f69422f145ae79d316a98ea SHA-1: c94d2fa738c96ea9a206db306387b515764125f1 SHA-256: 5bc18a6b24bf504ad65e48bf912f7505180612cc95f3c2fc0d357f3bb89fede2
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files across various domains, indicative of a link farm or a distribution mechanism. ClamAV identified this as Pdf.Phishing.TtraffRobotInstall, and a machine learning classifier also flagged it as malicious. The document body, though heavily obfuscated, contains some of these URLs, suggesting they are central to the file's purpose.

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://myjandj.com/uploads/1/3/0/3/130323210/05d3a8b26d6021a.pdf
    • http://lashesbyalyssaabq.com/uploads/1/3/0/3/130379509/barokejuru_fodoginifato.pdf
    • http://reboundat.com/uploads/1/3/0/6/130620283/2507476.pdf
    • http://maria-cipriano.com/uploads/1/3/0/5/130589454/vipozor.pdf
    • http://lindseymarina.com/uploads/1/3/0/5/130551782/gesegodurinol.pdf
    • http://innovationbroadcastservice.live/uploads/1/3/0/5/130541765/8356823.pdf
    • http://thecottonshops.com/uploads/1/3/0/4/130483215/634410.pdf
    • http://millennialwellnesscenter.com/uploads/1/3/0/2/130273617/retejumin_jamefujojof_bitodaduzebupod_nagoxota.pdf
    • http://therandytravisfoundation.org/uploads/1/3/0/2/130292125/gijob-sisuvivoko.pdf
    • http://blitzthetraffickers.com/uploads/1/3/0/5/130543671/zubiwidikune.pdf
    • http://kreativekidsworld.com/uploads/1/3/0/3/130323597/130323597.html#guided+go+kart+tour+tokyo
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012ac.bin
c44cc5f6b801750c0064a2c07f53d81bf13b29b4c657fcb129383bc5288a8e62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12AC 8016 bytes
font_01_sfnt_off0000655d.bin
25b5434c01f3d41eda7fbd72199506bcd4ea031f705846c5330177776ad09694		 pdf-font-stream PDF embedded font (sfnt) at offset 0x655D 16752 bytes

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