Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8753afb0e295ef0…

MALICIOUS

PDF

69.7 KB Created: 2021-04-06 04:17:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: dd7685099f4b69f8b05d5ddba67ed739 SHA-1: 4324b1feb487a41a3a75d432cfa0b4edf2828a30 SHA-256: e8753afb0e295ef025627e488c503be88f43b45899b76bc8c8d504f90f61d374
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, indicating a link farm designed to redirect users. Heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS' strongly suggest malicious intent. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this, pointing towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://baarspo.ru/wix?keyword=gmetrix+indesign+test+1+answers PDF link annotation
    • http://tiktokfrance.fun/official_badminton_score_sheet2lxvz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380857/normal_6016130f648c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389361/normal_60134b2db5d57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477892/normal_605fb96bb262d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379960/normal_601cdcd268e2b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375076/normal_60072d7d8d93f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474448/normal_5fe706cecc65f.pdfIn PDF document text
    • http://sufawevugut.mywebcommunity.org/54880813091.pdfIn PDF document text
    • http://vamolufu.getenjoyment.net/66571011340.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445754/normal_605a8e8941ecd.pdfIn PDF document text
    • http://aycotoro0.xyz/arma_3_altis_life_rebel_guidexowi8.pdfIn PDF document text
    • http://genoray.pro/dobobukagitg206.pdfIn PDF document text
    • http://it50disconto.info/17601803606g04hv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/439506e6-a5a5-46e0-aae7-3785985b112b/what_size_tires_does_a_2009_ford_focus_have.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1573943-5347-42bc-b3dc-9c5124792197/turagirolatunawupobogeri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7dcbfb5-fb2f-4ed8-baf9-2391181249dc/59069704104.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d2f7176-0fab-4d0c-a8ef-cd83eec8dc12/shatter_me_lyrics_lindsey.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91094e92-37b9-40ca-a88c-95e3b7ce641b/69246086763.pdfIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD277 5356 bytes
SHA-256: e81006a31af86dcb93b8f0bf06cb064a659db4de3c7019356b996017cb072bab
font_01_sfnt_off0000e4b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B2 10952 bytes
SHA-256: a0ce461bca96aa1194fc02ed1c4fa3dd012fea5627695b85a05896f80ca00593

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