Malicious PDF — malware analysis report

Static analysis result for SHA-256 9345e10f5a03c628…

MALICIOUS

PDF

61.3 KB Created: 2021-02-28 21:07:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: d9a101e0bc2da1dd9bcd3252c61558a6 SHA-1: f39269f72494dbba7eff7368ee0648063f72108c SHA-256: 9345e10f5a03c6283b4d9352b56219127b5d5dbd927083bd5f6a112558d05fed
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many pointing to other PDF files on disposable or SEO-focused domains, as indicated by the 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristics. ClamAV also detected this as a phishing trojan. The primary function appears to be directing users to external resources, potentially for malicious purposes such as phishing or malware distribution, rather than displaying meaningful document content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9571

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://golowaki.ru/award?keyword=fun+d%2526d+one+shot+ideas PDF link annotation
    • http://kufafukedexepix.mygamesonline.org/95675834318.pdfIn PDF document text
    • http://relaguguwo.22web.org/68836421643.pdfIn PDF document text
    • https://cdn.sqhk.co/sowojusawepu/vf4wjin/pelofumukisoj.pdfIn PDF document text
    • https://wuwinotidewav.weebly.com/uploads/1/3/5/3/135349353/7318f628e4.pdfIn PDF document text
    • https://cdn.sqhk.co/rozesivotix/he0ibia/8006461087.pdfIn PDF document text
    • http://xotizel.iblogger.org/3888863632.pdfIn PDF document text
    • http://koponegigat.medianewsonline.com/barafojiwun.pdfIn PDF document text
    • http://xunusemek.22web.org/17891999116.pdfIn PDF document text
    • https://cdn.sqhk.co/gipudeviwapi/fPha0ie/stickers_memes_para_whatsapp_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/datimemovuko/3pWwTFV/xivokosetufidazoxusa.pdfIn PDF document text
    • https://cdn.sqhk.co/gunobawiwax/1iihahi/59628681144.pdfIn PDF document text
    • https://cdn.sqhk.co/lijipatalenu/Znrijct/volotinosor.pdfIn PDF document text
    • https://cdn.sqhk.co/xenivoronizu/hhnrVbB/699180692.pdfIn PDF document text
    • https://cdn.sqhk.co/gukawaki/y1iciiY/idle_space_tycoon_hacked.pdfIn PDF document text
    • http://fobativ.mywebcommunity.org/brother_hl-l2360dw_troubleshooting.pdfIn PDF document text
    • https://cdn.sqhk.co/sexasegavon/NgjggfV/punogitorosubutopazefo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xumusemowujev.epizy.com/piriformis_syndrome_treatment_exercises.pdfIn PDF document text
    • http://pakafadudu.epizy.com/gitifodosebugezegofop.pdfIn PDF document text
    • http://geforagegi.atwebpages.com/stress_management_lesson_plans_for_college_students.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE645 4256 bytes
SHA-256: 8a2ad9980b7a2ed1cfd818c98f917a6226bbe3790670ff693caf9d3dcd9130d0

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