Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9ee54ffecd050d3…

MALICIOUS

PDF

89.0 KB Created: 2021-03-23 20:37:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: fd904cda2d52252a4f594ea810596b59 SHA-1: 25850ea192ce8e01e4d84e9ef50927bfe4b5f15c SHA-256: c9ee54ffecd050d3e4bef52facd1e40dcea0dd2c298656018faf4a95c07f0cbe
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan-like behavior. The document contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or redirection scheme to deliver malicious content. The presence of 'utm_term' parameters in some URLs indicates a potential phishing lure for specific search terms.

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://botokaw.ru/strik?utm_term=bmw+x3+e83+2.0+d+service+manual+free+download PDF link annotation
    • http://xevedudox.sportsontheweb.net/11583911895.pdfIn PDF document text
    • https://zolefixu.weebly.com/uploads/1/3/4/4/134432518/4e42d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390324/normal_5fe1cf654b605.pdfIn PDF document text
    • http://losopefopamusoz.sportsontheweb.net/sql_server_dba_interview_questions_and_answers_for_experienced.pdfIn PDF document text
    • https://kugixixubeleji.weebly.com/uploads/1/3/4/3/134324677/fujobe.pdfIn PDF document text
    • http://liketime.fun/what_is_a_good_sat_score_without_essayigm3d.pdfIn PDF document text
    • http://myyshooop227.site/dragon_age_inquisition_official_strategy_guidenaa54.pdfIn PDF document text
    • https://bidijogez.weebly.com/uploads/1/3/5/9/135993355/dovebonomuv.pdfIn PDF document text
    • http://lazotub.mywebcommunity.org/makita_ls1030_parts.pdfIn PDF document text
    • http://alteramaks.world/povusajobazizapatapeviq179b.pdfIn PDF document text
    • http://dirtygirl.fun/monica_her_story_bookdi2pv.pdfIn PDF document text
    • https://cdn.sqhk.co/dosojegomugu/ggjXhgw/strategic_management_examples_in_companies.pdfIn PDF document text
    • https://cdn.sqhk.co/genonitag/Fxc6chi/6357365307.pdfIn PDF document text
    • http://pixidilivutep.medianewsonline.com/37228739834.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456378/normal_6052e6e952a71.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://womidelere.myartsonline.com/jonupulutokagevetiwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93dbe13d-94e8-45c5-b20f-0e91cc692a78/viguromikimexuwisunesipe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ca5c92a-ff62-4f03-9f48-947dc23d4a86/62856877340.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0315c995-c03a-4abf-810a-8b087a39bdba/senior_graphic_designer_salary_nyc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b607f4b7-05f2-4a07-b026-8240ebf5c568/zaxev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/530babc4-e964-46b3-a8b6-edc3f681ea23/why_is_my_hp_scanner_scanning_in_black_and_white.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_off00011d57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D57 6100 bytes
SHA-256: 4cf4c9ac3eefd2994df66d5fd450dfc45f705e415b41f3d5de334b5a4164e1ed
font_01_sfnt_off00013227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13227 10756 bytes
SHA-256: 30a436c3d0c72dfa2bfbb42f20a9aaf21a30a6f4a2ffd373123d860e4ecd2274

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