Malicious PDF — malware analysis report

Static analysis result for SHA-256 517d8d8b0d697efd…

MALICIOUS

PDF

85.6 KB Created: 2021-03-29 01:33:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2be9fa5765c9b1ad7bee9edb09b7ab68 SHA-1: e151e659db09b62b63739f044877ec744afa9b2d SHA-256: 517d8d8b0d697efd9728edf1e1859200c3dad2c641a1cf99da373b70906dc6d2
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of external links, many hosted on disposable domains, suggesting it is part of a link farm designed for SEO manipulation or to distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. The embedded URLs and the document body's deceptive content point towards a lure for users seeking free music downloads, which redirects to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://mezovuduw.ru/wix?keyword=los+originales+de+san+juan+mp3+descargar+musica+gratis PDF link annotation
    • https://cdn.sqhk.co/surodamiz/jfhbny9/22035034979.pdfIn PDF document text
    • https://cdn.sqhk.co/dotusabu/aiegeQF/cricket_wireless_hotspot_box.pdfIn PDF document text
    • https://cdn.sqhk.co/nawafoxobok/hIihFji/lulezavopamuzejun.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/Bhcgige/19754306176.pdfIn PDF document text
    • https://cdn.sqhk.co/tezizejaropu/hcKghhi/basespace_er_update.pdfIn PDF document text
    • https://cdn.sqhk.co/talokelom/6jh75br/anthills_of_the_savannah_themes.pdfIn PDF document text
    • http://rewetuxavix.mypressonline.com/gafimajaxoboteredeli.pdfIn PDF document text
    • https://cdn.sqhk.co/zimajigon/0gePNjh/gakero.pdfIn PDF document text
    • https://cdn.sqhk.co/bemaxopig/qrLhc3l/15242052554.pdfIn PDF document text
    • http://ronifibofizet.medianewsonline.com/wamusi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407777/normal_601dc35b5dd46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402503/normal_601b43713f690.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368221/normal_6055be0f19427.pdfIn PDF document text
    • http://mpvideo.org/fudizivepuakkul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451574/normal_60190e0ba0d25.pdfIn PDF document text
    • http://tapozifokun.mywebcommunity.org/40119385888.pdfIn PDF document text
    • https://cdn.sqhk.co/pelopuxi/gighehc/guwosejufuvidenexejo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387825/normal_603c5e5e27e9a.pdfIn PDF document text
    • http://stat-index-co.com/zoveralewekimigituvibira6afzl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wareguw.atwebpages.com/fajapon.pdfIn PDF document text
    • http://niwurekatexo.atwebpages.com/makkar_ielts_academic_reading.pdfIn PDF document text
    • https://9e77dbea-16d6-438e-9859-4a68c5388828.filesusr.com/ugd/3225da_cf84dc636e7346eaac62415e22e06d10.pdf?index=trueIn PDF document text
    • https://af0fe010-594a-4ec7-a26b-e2d78e33490d.filesusr.com/ugd/7d2910_a62c21ec3a754d8cb855014836d94220.pdf?index=trueIn PDF document text
    • https://3d7304b5-8527-495f-b913-615d6f357a43.filesusr.com/ugd/ef7486_a7ed2bd9929745368ba7ba4435f517e0.pdf?index=trueIn PDF document text
    • https://cf075d60-af7c-4c71-a16c-5c8c125a9bb7.filesusr.com/ugd/cc03df_9c806eb61de949b796a2f8af0deb2a22.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A1 5572 bytes
SHA-256: e01df08415243722625f229632f31b6b0925a2c4486541664985f47c9511da46
font_01_sfnt_off00010b85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B85 12052 bytes
SHA-256: 8b29e989a4bf5c18adebaaff5ef72b2c15dd8000ee48dfbcd8b66f06de31efc9
font_02_sfnt_off00013309.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13309 16128 bytes
SHA-256: 5570ae8fa562a837499aa87710aed0b2bc48f7e42481059dc68e183d0697d456