Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4241029e8fb19c6…

MALICIOUS

PDF

80.3 KB Created: 2021-03-18 07:59:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 7558e957d751ab53afe9f73703cdc8c7 SHA-1: 55fc51a8c739e82b1347b00bab408676c8eeb193 SHA-256: e4241029e8fb19c632de420ab720ffcdf9e6946b754fabdbe3dc2c413c532bcb
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 0.9992

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://vilenefex.ru/wix?keyword=leed+green+associate+study+guide+free+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4501041/normal_601b57253c7a0.pdfIn PDF document text
    • http://wejuveziwep.mypressonline.com/62783344468.pdfIn PDF document text
    • http://redita.fun/masterbuilt_electric_smoker_cooking_times_for_ribs5bjqw.pdfIn PDF document text
    • http://marketop.club/kandidiasis_adalahqqn7o.pdfIn PDF document text
    • http://juwaniwabi.medianewsonline.com/old_school_places_near_me.pdfIn PDF document text
    • http://justamorem.com/how_to_reset_a_ba_ii_plus_professional_calculatorsgdft.pdfIn PDF document text
    • http://kofoxulemaxabur.22web.org/binary_options_indicators_free.pdfIn PDF document text
    • http://theplafond.xyz/where_to_fix_my_sewing_machine_near_meunhx9.pdfIn PDF document text
    • http://xigosilefonaboj.iblogger.org/number_blacklist_free.pdfIn PDF document text
    • http://rejudatawenu.iblogger.org/34150960933.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420752/normal_5fee3c1bf41fc.pdfIn PDF document text
    • http://poguferuliwu.iblogger.org/87159691349.pdfIn PDF document text
    • http://tetupamino.mywebcommunity.org/dafovodotijemavu.pdfIn PDF document text
    • http://lnstagram-copyright-confirms.com/53734019426dkcje.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/9d3572fd-04e5-4690-84db-960af04355b3/80757176286.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5c72941-d50a-4a25-9d43-2594bc01142b/kuzugobotamedupaxap.pdfIn PDF document text
    • http://levuras.epizy.com/consequentialist_theories.pdfIn PDF document text
    • http://fagivirogo.rf.gd/sustainability_principles_and_practice_margaret_robertson.pdfIn PDF document text
    • http://nisexugolozefa.rf.gd/aristotle_and_dante_discover_the_universe.pdfIn PDF document text
    • http://dexizijisub.atwebpages.com/kojukawetes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04efb3b7-e684-4334-b44c-dd5435fe3f0c/dirt_devil_canister_vacuum_bags_type_f.pdfIn PDF document text
    • http://fabodatutowew.epizy.com/cognos_report_testing_tutorial.pdfIn PDF document text
    • http://duziroro.myartsonline.com/the_care_and_keeping_of_you_2_table_of_contents.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_off0000f991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF991 5332 bytes
SHA-256: 17e956883f5328e09d50d5d4fc1eaee90c9b687059f27cb50f8a4fb4000ccd67
font_01_sfnt_off00010bd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD7 11108 bytes
SHA-256: cf97d6025075ed5c51fe878ba205ab1de12ce49dd246598eddfe62dc8f070a97

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