Malicious PDF — malware analysis report

Static analysis result for SHA-256 42fe4a6b2fd51d83…

MALICIOUS

PDF

74.5 KB Created: 2021-03-29 14:24:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: d1981d0b2e0cf766bb728640dc0909dc SHA-1: 974603f5e9cd958ed9089c882f33cf622986c1f7 SHA-256: 42fe4a6b2fd51d834d0a9b9ea423cda6dd2103ae6dc9cab5a66b8697d5461b8b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains and link farms, suggesting an attempt to redirect users to malicious sites. The document body, though heavily obfuscated, contains metadata related to PDF generation, indicating it's likely a crafted document rather than user-generated content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/wix?keyword=mopar+antifreeze+equivalent PDF link annotation
    • https://cdn.sqhk.co/pazakazagoz/SNje4fs/civil_war_chancellorsville_map.pdfIn PDF document text
    • https://cdn.sqhk.co/zisubiziwu/hehiehi/strategic_alliance_management_professional.pdfIn PDF document text
    • https://cdn.sqhk.co/botikavanov/ijdOMPR/word_chums_cheat.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/fBjdhgC/pirate_kings_hack_2019_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/gibuzini/djdficP/certificate_of_employment_for_teachers_sample.pdfIn PDF document text
    • https://cdn.sqhk.co/wojipezusax/eujbVhi/tiles_hop_edm_rush_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/wapevenupu/OoBJge3/rc_racing_challenge_mini_cooper_s.pdfIn PDF document text
    • http://businesslinecenter.com/gutazigotero19ieg.pdfIn PDF document text
    • http://wonder-ita.fun/what_does_confederacy_of_dunces_meanf450c.pdfIn PDF document text
    • https://cdn.sqhk.co/wanuvudeb/3HnPuUa/fast_racing_rmx_review.pdfIn PDF document text
    • http://dabedera.mygamesonline.org/calculus_11e_larson.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/jjwUwia/18646114534.pdfIn PDF document text
    • http://sdek-24.cc/bikurevekilonulrc9f.pdfIn PDF document text
    • http://allroadkamchatka.ru/krav_maga_history_bookzwogi.pdfIn PDF document text
    • http://zifufarox.getenjoyment.net/ccna_troubleshooting_labs.pdfIn PDF document text
    • http://tunewejewuz.mypressonline.com/second_and_third_mixed_conditionals_exercises.pdfIn PDF document text
    • http://accueilcmb.com/topical_memory_system_cardsqsmeu.pdfIn PDF document text
    • https://cdn.sqhk.co/malofavu/jaia6he/71296437860.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/1aa14b9b-e5a3-47f2-8fef-5d0fc556d820/dipuzebejazijax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55b91f72-c28b-438a-91cc-7a567490cbdd/smokey_mountain_grill_brisket.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a19a1cb3-e3ce-4629-9cf6-df9c2b0773f0/vemeraxobutabarodilira.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_off0000e3d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D4 4960 bytes
SHA-256: f8219ac8a7351d7ce32ea441e2555006da820312f9888563736caf9e833a03c6
font_01_sfnt_off0000f4e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E7 11700 bytes
SHA-256: 270facf36afd25b7824f95c6230b94118505269c526a0c8e66b3eedfec113e85

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