Malicious PDF — malware analysis report

Static analysis result for SHA-256 4213ebc86fb4a3eb…

MALICIOUS

PDF

52.0 KB Authoring application: QPDF First seen: 2026-05-09
MD5: 9b6138dc6552f2528cbd187a329be096 SHA-1: 4f791ca156c078220842300d2a342271edf958ab SHA-256: 4213ebc86fb4a3ebdb7fe25cf431126b69ed7d9ef729026bba01a4a418ab4b2e
152 Risk Score

Malware Insights

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

The PDF file contains a link farm, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests the document is designed to redirect users to multiple external PDF files hosted on various domains. The ML classifier and ClamAV detection further support its malicious nature, classifying it as phishing-related malware. The embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://needacable.com/uploads/1/3/0/3/130323377/5db91cc2c.pdf In PDF document text
    • http://morphmylogo.com/uploads/1/3/0/6/130620945/xozobotonutej_vetomar_tamurupeg.pdfIn PDF document text
    • http://tamingbigfootseattle.org/uploads/1/3/0/5/130589178/4ea51.pdfIn PDF document text
    • http://beyondhillco.com/uploads/1/3/0/6/130604307/130604307.html#las+bases+nitrogenadas+propias+del+adnIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000105c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105C 9820 bytes
SHA-256: b817f21f43d3d575184fe7b1fc7ed491f3ef78748ad83b6e35bf6aef9fb807b2
font_01_sfnt_off00007c07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C07 16208 bytes
SHA-256: f304d5248de4d2d535e11e5a3f00133999c598ccb7ee943f2677ab784214679d
font_02_sfnt_off000090f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90F1 2708 bytes
SHA-256: ef56800321575c4cdac6f1c4af3b8199871638fd5d219ef2441f058b682d8814

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