Malicious PDF — malware analysis report

Static analysis result for SHA-256 652abd4c3acf6d72…

MALICIOUS

PDF

35.4 KB Authoring application: SWFTools
MD5: 66c2874552363ffde6471f5d758f9f7b SHA-1: 5c56b4b45357563f9294ca3ed053550022268190 SHA-256: 652abd4c3acf6d72872c98b8f34370a8683f5fa9298a5617c54abbbac923cc9e
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 external PDF files, a technique often used for SEO spam or to distribute further malware. ClamAV detected this file as Pdf.Phishing.TtraffRobotInstall, and an ML classifier also flagged it as malicious. The embedded URLs are the primary IOCs, suggesting a phishing or content distribution attack.

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://thefascinator.com/uploads/1/3/0/4/130483248/87835b717.pdf
    • http://fairvotepiercecounty.com/uploads/1/3/0/5/130540219/9925b07377daff.pdf
    • http://visionsofadventure.com/uploads/1/3/0/6/130639690/4817cd0756ca9.pdf
    • https://nadinadifojuwi.weebly.com/uploads/1/3/0/2/130274371/xemivekerawivek.pdf
    • http://2btechlv.com/uploads/1/3/0/4/130476205/vurutowumimidopepema.pdf
    • http://mobilemassagenc.com/uploads/1/3/0/5/130588584/57212f4cf35.pdf
    • http://bardfamilymarketgarden.com/uploads/1/3/0/5/130589362/c228905b400.pdf
    • http://reneeleaberger.com/uploads/1/3/0/4/130475980/1902fdc1ffc0.pdf
    • http://colddiamnd.com/uploads/1/3/0/6/130603793/130603793.html#fifa+15+indir+sa%C4%9Flam+indir
    • 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_off000013a1.bin
9a881666b50e6e069aa0a77bfa61e5965fcee302f3332808ebb7ff212a335e3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A1 8868 bytes
font_01_sfnt_off00004262.bin
5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4262 16268 bytes

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