Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f993e6d9773a161…

MALICIOUS

PDF

37.2 KB Authoring application: PDFedit
MD5: b76043b9141790116aa235c70b8cb04f SHA-1: 43dcf56bdf4d9362833a10ba418c3b0e19fef7f5 SHA-256: 4f993e6d9773a161d35ebfa3571f8824623c06aaf7eb9e849b757f7c9da53f7a
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple heuristics, including ClamAV and an ML classifier, for malicious content. The PDF_SEO_LINK_FARM heuristic indicates the presence of a large number of external links, with the primary domain being 412catawba.com. The embedded URLs confirm a link farm structure, suggesting the document's primary purpose is to redirect users to potentially malicious websites, consistent with phishing or SEO poisoning tactics.

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://412catawba.com/uploads/1/3/0/3/130313228/3854463.pdf
    • http://scallywaggish.shop/uploads/1/3/0/5/130541424/696433071fe78a.pdf
    • http://millscountychamber.com/uploads/1/3/0/2/130289508/sumil.pdf
    • http://etvetus.com/uploads/1/3/0/3/130312985/mebep.pdf
    • http://beatafurstenberg.com/uploads/1/3/0/5/130590241/jisutolobejuxin.pdf
    • http://loveraweze.syndicat.club/uploads/2020/01/29/3255585.pdf
    • http://sjnbasketball.org/uploads/1/3/0/3/130313093/6539395.pdf
    • http://nupelicanparty.org/uploads/1/3/0/4/130479123/130479123.html#ribbon+in+the+sky+stevie+wonder

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001117.bin
e01cf28423a457315fb60199b785722ec3501a3fa4e858bb812b19e8345d8a55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1117 8040 bytes
font_01_sfnt_off000049ea.bin
378288d3133907284a1dd708aec606fa45674349f7e67e9eaedc79a8f6af9139		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49EA 16228 bytes

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