Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d0f218673748e79…

MALICIOUS

PDF

79.9 KB Created: 2021-03-24 11:11:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e3cea4b0e35c698cd9606d19c8052c07 SHA-1: 95483d825fcff77416785b230301ef194b6cec13 SHA-256: 4d0f218673748e79f2c26a4ef906c1f1aadbb46b593c9f94edab357a60809876
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/wix?keyword=ffx+2+matchmaking+guide PDF link annotation
    • https://cdn.sqhk.co/wetewajaba/jjhe7G8/diamond_digger_saga_game_download.pdfIn PDF document text
    • http://xexufonek.iblogger.org/33910047459.pdfIn PDF document text
    • http://auto-fishing-rods1.club/anjaana_anjaani_movie_download_400mb4r72t.pdfIn PDF document text
    • http://akillidestekbasvuruformu.online/icom_208h_manualz9wdd.pdfIn PDF document text
    • https://cdn.sqhk.co/webepinovet/jhjfqid/4450048002.pdfIn PDF document text
    • https://warazafipa.weebly.com/uploads/1/3/1/3/131381481/rebufaxiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459929/normal_605aa80618cf5.pdfIn PDF document text
    • https://cdn.sqhk.co/fiseguvugele/aQAwH4r/ticket_to_ride_europe_rules_french.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378381/normal_602a50254568c.pdfIn PDF document text
    • https://cdn.sqhk.co/zitajazasu/hsjdvgj/how_to_speak_real_english.pdfIn PDF document text
    • https://cdn.sqhk.co/tatomaxeriri/p5OL9jf/81422312407.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483071/normal_602fd273b89a0.pdfIn PDF document text
    • https://cdn.sqhk.co/buzunonoj/dEGyjaW/forex_trading_complete_course_in_urdu.pdfIn PDF document text
    • http://prodit.space/phrases_exercises_with_answers_for_class_6ilugb.pdfIn PDF document text
    • https://cdn.sqhk.co/sunalikefazo/jgihehc/gambar_monkey_d_luffy_gear_5.pdfIn PDF document text
    • https://pezibusogesa.weebly.com/uploads/1/3/0/7/130739584/5070212.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369762/normal_60570e59d84af.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vujexufekazama.rf.gd/best_wod_ever.pdfIn PDF document text
    • http://lexulegoserixa.epizy.com/1996_four_winds_travel_trailer_owners_manual.pdfIn PDF document text
    • http://jawegoxizifiti.epizy.com/commutative_law_worksheet.pdfIn PDF document text
    • http://wapemufabaloni.rf.gd/vezemodivulusivifizedesox.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

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_off0000f8c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C6 5348 bytes
SHA-256: 1adf524094143913cab39c096d93c776995f8c53ded09334fda78564eece747f
font_01_sfnt_off00010add.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ADD 11752 bytes
SHA-256: 027d23e0a28d6b13be8defa0be0246b8be695cafe530841692444621731d9dd6

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