Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6011208b171f92e…

MALICIOUS

PDF

41.5 KB Authoring application: SWFTools
MD5: 37b5780146804551d169ff544d090d5c SHA-1: 801b6ce356b6b5b5f76b71e3d58376a73fbf082c SHA-256: d6011208b171f92ea19a7887e202d1b5176cd01427186ad92629e5ea8afddf5e
150 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files hosted on different domains. This suggests a phishing or redirection campaign. The document body contains garbled text and a reference to 'Pleural effusion diagnosis code', which appears to be a lure.

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://adannaglobal.com/uploads/1/3/0/3/130313670/1497421.pdf
    • http://create218.org/uploads/1/3/0/4/130483213/6481937.pdf
    • http://mytgob.com/uploads/1/3/0/7/130775652/60a7f1127e32.pdf
    • http://homegrownent.net/uploads/1/3/0/6/130605028/52808557.pdf
    • http://thekarmaofbeinggay.com/uploads/1/3/0/6/130621119/ropikoseren_baxuxezovuno_jiriro.pdf
    • http://executivetraininghawaii.com/uploads/1/3/0/7/130739032/faa15d82.pdf
    • http://johnridleyformayor.net/uploads/1/3/0/2/130272898/57e1b7b4ee99e1.pdf
    • http://storystew.org/uploads/1/3/0/5/130539338/4aa54bee86b.pdf
    • http://davidmunoz.org/uploads/1/3/0/4/130476427/17a25f16.pdf
    • http://bark-blaster.com/uploads/1/3/0/5/130589165/9134678.pdf
    • http://truegrit.org/uploads/1/3/0/6/130639230/fobesibiga.pdf
    • http://74-123-77-75.mgwnet.com/uploads/1/3/0/6/130639728/130639728.html#pleural+effusion+diagnosis+code
    • http://thekarmaofbeinggay.com/uploads/1/3/0/6/130621119/ropikoseren_baxuxezovun

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a89.bin
a327b6240ba5e101510a7a8f2f95707c050a8b415677e8e93c6c6c520e186e4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A89 8672 bytes

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