Malicious PDF — malware analysis report

Static analysis result for SHA-256 9636e390c4015650…

MALICIOUS

PDF

42.8 KB Authoring application: Soda PDF First seen: 2020-09-15
MD5: 476c6a56ffb9819a56615be6e431dacf SHA-1: 56510f331d690dab38fd4c7db3e4bea0e19d2ef9 SHA-256: 9636e390c4015650d5699dd6c870c4b646ea362395d9b456368cef4562f2e1ec
152 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.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C4 7928 bytes
SHA-256: 0c0b6283f872aeb92d2257f4fea81bd9a21a220fe1f74663e0a24a4bb3941e42

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