Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5f157ad7111cc2e…

MALICIOUS

PDF

75.5 KB Created: 2021-03-24 00:20:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 572cd7258c2bbe3cfdadee6d8f899e16 SHA-1: 5db1ea0f0a86ffe3e9aac2211bbf49fb20ad07d5 SHA-256: e5f157ad7111cc2ed7bf0293c534851532a4c40feabcf4079cc7b1ebe44dbc4d
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 0.9991

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://bologen.ru/strik?utm_term=walmart+hours+of+operation+for+holidays PDF link annotation
    • https://cdn.sqhk.co/jesovolavig/isji0ha/learn_to_play_songs_on_piano_youtube.pdfIn PDF document text
    • https://cdn.sqhk.co/babonisu/9hiyhfg/pirate_battleship_rs3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454547/normal_5fddcddc402d2.pdfIn PDF document text
    • https://cdn.sqhk.co/zizenozi/fNjbjiw/high_speed_motorcycle_price_in_pakistan.pdfIn PDF document text
    • https://cdn.sqhk.co/lobinazema/iegiuha/pepojuvizu.pdfIn PDF document text
    • https://cdn.sqhk.co/zipedufipiz/ibgjhzJ/brick_game_app.pdfIn PDF document text
    • https://cdn.sqhk.co/wigalefu/qIjilLf/las_vegas_zion_national_park_grand_canyon.pdfIn PDF document text
    • https://cdn.sqhk.co/woluzadeviv/ihfheXr/74476731379.pdfIn PDF document text
    • https://cdn.sqhk.co/serodozire/jiohigg/45639638431.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366964/normal_5fee4aeed3c94.pdfIn PDF document text
    • https://cdn.sqhk.co/sevimifogu/biaGlgc/lalarotezabovabipoguxet.pdfIn PDF document text
    • https://cdn.sqhk.co/niserutom/EgxgjI9/alpha_guns_free_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/sicvqij/titan_quest_ragnarok_xbox_review.pdfIn PDF document text
    • https://cdn.sqhk.co/losomilodip/fceQ9gc/honeysuckle_rose_sheet_music.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458132/normal_5ff6ae41a36fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382407/normal_6030a58ce042e.pdfIn PDF document text
    • http://wijasagasipode.getenjoyment.net/75297456567.pdfIn PDF document text
    • https://cdn.sqhk.co/vusabutam/hcjjHRk/wupuwerubewixemus.pdfIn PDF document text
    • https://cdn.sqhk.co/kuregemuwu/Sjhjiem/bitdefender_total_security_apk_cracked.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/hDjgpjc/66125093630.pdfIn PDF document text
    • https://cdn.sqhk.co/nawamuzimosu/2H7ihHe/oceans_lyrics.pdfIn PDF document text
    • http://naturelofo.mypressonline.com/what_is_reflection_coefficient_in_seismic.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vubelifijam.atwebpages.com/pozizaweze.pdfIn PDF document text
    • http://saxodanokijaj.atwebpages.com/maytag_2000_series_washer_issues.pdfIn PDF document text
    • http://jotudokizer.onlinewebshop.net/simple_house_drawing.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_off0000e6ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6EC 5396 bytes
SHA-256: f3511ee4e919a02760e1613ad959a916a5a464c53e9ce1f1916aa193f964e535
font_01_sfnt_off0000f930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF930 10912 bytes
SHA-256: 08e841c76526184babafee9b9f718ead9dc377bbe8e8c79bf7e6ff2e5058081f

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