Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d482c0364ccfb7e…

MALICIOUS

PDF

76.3 KB Created: 2021-02-08 12:09:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8e6a94e9a87d6e23ef358b3fefcc8875 SHA-1: c99219e1dc24a8b920e02b8392518471f24d42c5 SHA-256: 7d482c0364ccfb7ed95942a856e11826d2a1f29a9cb3a0c6a8dad09f70a0d957
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/123?utm_term=pig+card+game+pdf PDF link annotation
    • http://im-marceting.site/34779949058gwr5i.pdfIn PDF document text
    • http://vash-fasad.live/8014535175d6ytc.pdfIn PDF document text
    • https://cdn.sqhk.co/xafiguzi/XA3FuCL/wyze_apple_homekit.pdfIn PDF document text
    • https://cdn.sqhk.co/tezizejaropu/jgjbgjP/tank_hero_laser_wars_mod_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/rilaraviror/gjyhjje/runescape_maple_tree_locations.pdfIn PDF document text
    • https://cdn.sqhk.co/mixasuwekov/BgdheX1/pinball_go_big_win_real_money.pdfIn PDF document text
    • https://cdn.sqhk.co/nenuguvan/huhiK2e/67427796674.pdfIn PDF document text
    • https://lobusuzagoti.weebly.com/uploads/1/3/4/4/134470260/8d90c.pdfIn PDF document text
    • https://cdn.sqhk.co/kagalitisup/cid3Vig/smash_bros_brawl_characters.pdfIn PDF document text
    • https://cdn.sqhk.co/metevetufi/ZDhaX9r/best_fishing_kayak_life_vest.pdfIn PDF document text
    • http://reetodo.online/migikiretijuxifemigowamez80qf.pdfIn PDF document text
    • http://dressnbuy.com/another_brick_in_the_wall_pt_1_tabs9tcr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gefuxexo.epizy.com/karog.pdfIn PDF document text
    • http://wivowutone.epizy.com/artorius_the_doombringer_guide.pdfIn PDF document text
    • http://wexipara.rf.gd/belmont_college_of_music_and_performing_arts.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_off0000ef46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF46 5268 bytes
SHA-256: 146354edbe3d398ef877e4ce6a10367d2e97988d1ba8348b87b351c5654f5a4e
font_01_sfnt_off00010122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10122 10420 bytes
SHA-256: a8b516e182d50b8df611d7b5c618ee17486a9302a01e7e3fb4ff012fb4093741