Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6eaa1a70e8f52dd…

MALICIOUS

PDF

50.3 KB Authoring application: PDFBox
MD5: e80d5333aaaa53ac9b6c0a446cf7b508 SHA-1: b9c889e88c99bee3892ba0d1c7ae01896ac9c9bf SHA-256: b6eaa1a70e8f52ddbb5e8c8164e507b55f64dda0a742d6a92560b60269f00dc1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, with the primary domain being adambaybutt.com. The document body contains numerous URLs, all pointing to external PDF files, suggesting a link farm or redirection scheme. The overall purpose appears to be directing users to a network of potentially malicious or SEO-abusing content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://adambaybutt.com/uploads/1/3/0/5/130551140/92f13f300dd.pdf
    • http://ketuation.ru/uploads/2020/01/28/taserej.pdf
    • http://supplementsformedicare.com/uploads/1/3/0/5/130551880/3308797.pdf
    • http://cakenetwork.us/uploads/1/3/0/5/130539428/tezipasotesapok.pdf
    • http://noblocky.com/uploads/1/3/0/6/130621447/xomifixaxonup-junosilazugumo.pdf
    • https://xipitatozanox.weebly.com/uploads/1/3/0/2/130288348/6596734.pdf
    • http://nuvisionconstructionservices.com/uploads/1/3/0/2/130287242/vegoxovifoxaxo.pdf
    • http://petershenkinlaw.com/uploads/1/3/0/3/130379117/javobetupi_kikibuwodipet_jemox_tivak.pdf
    • http://casachurba.com/uploads/1/3/0/4/130435562/d88b21aafdfe.pdf
    • http://ez-knowledgebase.com/uploads/2020/01/29/7d406d39be64be.pdf
    • http://northwestembroidery.net/uploads/1/3/0/4/130479082/130479082.html#pokemon+go+defender+bonus

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013f8.bin
5d655dae8f4e1493c92eb5dfbd474d363c78cf29a40d60cf26f5ae36b197c3f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13F8 8096 bytes
font_01_sfnt_off000079ee.bin
54f1c9d3d395c34409aa9781a83d96295f4f6c7c05776845a374b67259ea3938		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79EE 11432 bytes

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