Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdfd3ca02551d6df…

MALICIOUS

PDF

71.3 KB Created: 2021-04-04 13:08:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a0bc6dc9cf934e546440e76bfc3a5dd0 SHA-1: 9b68067ce3d1e071441a6da7ad8d2ffe0238ff2b SHA-256: bdfd3ca02551d6df10ed4cf80d3e6c141ad14004c4e0552e34d031bda6a6b447
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, many pointing to disposable domains, and is flagged as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users 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://druttle.ru/wix?keyword=scott+watson+test PDF link annotation
    • http://ryursew.space/alcatel_go_flip_v_phone_manualtwbrh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386834/normal_603b18ab289da.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/jepijazenudemuvilolo.pdfIn PDF document text
    • https://cdn.sqhk.co/ledodatefu/ianihUW/49144741449.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/ostrich_farm_management.pdfIn PDF document text
    • http://speak4pro.com/mejetusukikegedenelatelopqopk.pdfIn PDF document text
    • https://cdn.sqhk.co/sowuwinadapu/Hjbghif/best_app_to_learn_drawing_ipad.pdfIn PDF document text
    • http://help-verification.com/974212233385hatm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406809/normal_603fd5e1d1403.pdfIn PDF document text
    • http://rubka.space/parallelism_worksheet_with_answersla7ew.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/57942979115.pdfIn PDF document text
    • http://smartcreditcheck.info/3111905081l3l77.pdfIn PDF document text
    • http://replyua.site/twilight_forest_mc_1.12.2_3.8.689_doufs7i.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/mobagadibori.pdfIn PDF document text
    • http://daddytestit.xyz/wusofujozefanunufeky9rt.pdfIn PDF document text
    • http://all-system7.xyz/14444795261zerzq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8b83d164-5e56-46cc-b941-48f48810ddf3.filesusr.com/ugd/76ce43_7f2ee13fc8a64a5bb7db542baef436aa.pdf?index=trueIn PDF document text
    • https://4328a374-8b5c-4134-9cef-e132ca5fc89d.filesusr.com/ugd/6732b1_b398057682754f6e9548e2b3f068ea6c.pdf?index=trueIn PDF document text
    • https://a8a70d16-e3f0-4805-b115-4d8c62c40b57.filesusr.com/ugd/82e28d_af5b7244e2324ec39454eee866e32069.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

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_off0000d9bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9BB 4860 bytes
SHA-256: 45bd17585f5d2093f77380e3fd7eddc5a0261e787e9139ac4f2019a922f11b2e
font_01_sfnt_off0000ea6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA6D 11224 bytes
SHA-256: ddc326fa2068136baba1308e5336d06a733735aecd865ffd5c4e3dfa82fffbf7

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