Malicious PDF — malware analysis report

Static analysis result for SHA-256 9636e390c4015650…

MALICIOUS

PDF

42.8 KB Authoring application: Soda PDF
MD5: 476c6a56ffb9819a56615be6e431dacf SHA-1: 56510f331d690dab38fd4c7db3e4bea0e19d2ef9 SHA-256: 9636e390c4015650d5699dd6c870c4b646ea362395d9b456368cef4562f2e1ec
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique commonly used for SEO poisoning or phishing. The ClamAV detection as 'Pdf.Dropper.Agent' further supports malicious intent. The document body, though heavily obfuscated, contains URLs that are part of this link farm, suggesting the primary purpose is to redirect users to potentially malicious content hosted on these domains.

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.Dropper.Agent-7906854-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7906854-0
  • 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://nflar.club/uploads/1/3/0/4/130488362/nufodi.pdf
    • http://lorejut.urologya.expert/uploads/2020/01/28/2963696.pdf
    • http://woodlandelementarycoachhughes.com/uploads/1/3/0/4/130488513/538b212bf9.pdf
    • http://deannalindstrom.com/uploads/1/3/0/5/130589095/jajuvezudekeda.pdf
    • http://fountainalleybodycare.com/uploads/1/3/0/5/130551896/7118432.pdf
    • http://womeninedresearch.weebly.com/uploads/1/3/0/6/130640078/0e4ca13e0.pdf
    • http://nuobeijing.devsite-1.com/uploads/1/3/0/2/130288514/130288514.html#mitosis+daughter+cells+formed

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010c4.bin
0c0b6283f872aeb92d2257f4fea81bd9a21a220fe1f74663e0a24a4bb3941e42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C4 7928 bytes

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