Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce318e316c535aaf…

MALICIOUS

PDF

84.1 KB Created: 2021-02-26 11:40:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: e4c2528ed686b8fe4a7996ad29d04e68 SHA-1: c5f034757e3f9b4f5d4dc1e37ade46df9cb0affa SHA-256: ce318e316c535aaf1e5ba109cb69340cc95360d02249f630f8167c1a3670c664
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, with the primary one being a lure for thermostat wiring information. Heuristics indicate this PDF is part of a link farm on disposable hosting, and ML classifiers and ClamAV strongly flag it as malicious, likely phishing or a trojan. The presence of external URIs suggests an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://maypoin.ru/award?keyword=white+rodgers+thermostat+wiring+to+nest PDF link annotation
    • http://jojidasusesot.sportsontheweb.net/marriage_bible_study_lessons.pdfIn PDF document text
    • http://antinomi.design/wokujasesapabefiwurazipup6bax2.pdfIn PDF document text
    • http://reflectionss.space/funatopofeoc4xi.pdfIn PDF document text
    • http://lnstagram-badge-verification.com/tadijeja3y4vf.pdfIn PDF document text
    • http://idealica-italiaoficial.site/fodunixibmvf5c.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/66439122763.pdfIn PDF document text
    • http://groby-ritual.online/97362499970wdk1p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460230/normal_601663ca251bf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403679/normal_5fee73fe10167.pdfIn PDF document text
    • http://gemubanabugawa.mypressonline.com/60938589817.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bajuse/75278229540.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/causes_of_world_war_1_mania_worksheet.pdfIn PDF document text
    • http://rosajeku.myartsonline.com/rapibovowoxu.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_off00010bf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BF3 5312 bytes
SHA-256: 8dc294b501f71ac26282d6a303997dd450510360809fc6aabbc6923815cefa9d
font_01_sfnt_off00011dee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DEE 10968 bytes
SHA-256: 1aa9e39f3ca09c87c2d2161d0915301a7fed398a86a24e2896a40019c5121ae3

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