Malicious PDF — malware analysis report

Static analysis result for SHA-256 78eb66d99ee8b751…

MALICIOUS

PDF

40.4 KB Authoring application: pdf-parser First seen: 2026-05-08
MD5: 4c9271b3251e3ff197854936da5da7b2 SHA-1: 4fc49afe9e6547c7001ee2c7da49abebb71b2c64 SHA-256: 78eb66d99ee8b751ea90f012350afe953a96fb9cccb77469c8e37828bac2a106
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a mass external link farm with 22 links, a common technique for distributing malicious content or phishing pages. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output further support its malicious nature. The embedded URLs are likely used to redirect users to compromised websites or malware downloaders.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://thedigitaltheologian.com/uploads/1/3/0/4/130488096/1313213.pdf In PDF document text
    • http://xus.finansguru.ru/uploads/2020/01/28/e48469b8e99.pdfIn PDF document text
    • http://smoothtransitionservices.com/uploads/1/3/0/4/130435771/rapiwukexaxo_loxotexekid.pdfIn PDF document text
    • http://vipiski-besplatno22.icu/uploads/2020/01/28/4678817.pdfIn PDF document text
    • http://remont-msk4.icu/uploads/2020/01/28/1147407.pdfIn PDF document text
    • http://midamericanthermal.com/uploads/1/3/0/6/130604285/9329e74f629426f.pdfIn PDF document text
    • http://familytravelsworld.com/uploads/1/3/0/4/130476215/sinaku-dilila-xuwuvovokufolik-befimugimaxev.pdfIn PDF document text
    • http://slpresource.com/uploads/1/3/0/4/130476066/kigegiwudegufup_gugibesa_kelapotasen_zajerozuvebajaz.pdfIn PDF document text
    • http://bradygazzome.com/uploads/1/3/0/3/130379192/bbcada.pdfIn PDF document text
    • http://moniquewgyoga.com/uploads/1/3/0/3/130379336/1615754fb8085b4.pdfIn PDF document text
    • http://batazakek.pulkovo3.info/uploads/2020/01/27/cb38603d6bf42c.pdfIn PDF document text
    • http://allergy.mediutopia.com/uploads/1/3/0/6/130620574/130620574.html#chalkboard+back+to+school+templateIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1361 8748 bytes
SHA-256: 89a63d35319f91d38f148a8d2aed8657d6f773bc8318c651a5d7508b5ab89bf2
font_01_sfnt_off000062cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CC 2616 bytes
SHA-256: d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04

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