Malicious PDF — malware analysis report

Static analysis result for SHA-256 02536bf30bdf6368…

MALICIOUS

PDF

43.3 KB Authoring application: SWFTools
MD5: d4cbdbd53c43a92d34b5ed7d65a022e3 SHA-1: 2ac2b950f83505706e49afd30030965bf4805b2c SHA-256: 02536bf30bdf6368291ee1eecc6e9d089c4427e5ea9214a8845f1ff0d6fd2e7f
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to other PDF files, disguised as educational resources. The heuristic 'PDF_SEO_LINK_FARM' and the ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly indicate a phishing or malicious redirection campaign. The embedded URLs are likely used to distribute further malicious content or lead users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://strongholdequineequipment.com/uploads/1/3/0/5/130539691/a31817c27.pdf
    • http://wvuhousing.com/uploads/1/3/0/3/130379291/jofutale-bejifunamevidom-suvose-buliton.pdf
    • http://jakeberman.net/uploads/1/3/0/7/130740389/demunelafapo.pdf
    • http://boiacatering.com/uploads/1/3/0/5/130538990/kovodomutajuviw-fewexilowafog.pdf
    • http://bodyworkbybarb.com/uploads/1/3/0/4/130483454/130483454.html#advanced+business+english+worksheets+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010b5.bin
cd4d0f6f6ca8e6e86fd08d77cf87c8f6e62138de19a83bd33f59800d32325ea5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B5 8416 bytes

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