Malicious PDF — malware analysis report

Static analysis result for SHA-256 8152d402152c72cd…

MALICIOUS

PDF

76.7 KB Created: 2021-02-24 01:51:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 99501bc2d20bdaa9821e966dbe61bbd1 SHA-1: dd1200b390c392d12281fe6ad7f9e6fe747d646d SHA-256: 8152d402152c72cd52e57b1e9918d12c1a45da671d0f917eecc8f2aaa951f00a
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://maypoin.ru/wb?keyword=british%20army%20rank%20equivalents PDF link annotation
    • https://cdn.sqhk.co/wobuwozavenu/hfgcEGN/alone_season_6_winner_where_is_he_now.pdfIn PDF document text
    • https://nopeludaseji.weebly.com/uploads/1/3/3/9/133986928/5081197.pdfIn PDF document text
    • https://cdn.sqhk.co/rapovixovuti/kphaidr/65998629209.pdfIn PDF document text
    • http://copyrightsupportforlnstagram.com/99_year_lease_agreement_sample7ta7a.pdfIn PDF document text
    • https://tezilejesitox.weebly.com/uploads/1/3/1/1/131163634/bituravar.pdfIn PDF document text
    • https://vimixake.weebly.com/uploads/1/3/1/1/131164471/05fd55cbb6507.pdfIn PDF document text
    • https://cdn.sqhk.co/dusivubeleza/gejhGhh/world_war_1_propaganda_posters_ideas.pdfIn PDF document text
    • http://korecos.ru/79965281184fagcl.pdfIn PDF document text
    • https://cdn.sqhk.co/wowixepis/PggPggG/flying_larva_game.pdfIn PDF document text
    • https://cdn.sqhk.co/moxelutedoje/hbijwve/scar_simba_run_away.pdfIn PDF document text
    • https://cdn.sqhk.co/pikevasoze/7jgjauK/95126132465.pdfIn PDF document text
    • https://nexudusuje.weebly.com/uploads/1/3/0/7/130740550/8744128.pdfIn PDF document text
    • https://cdn.sqhk.co/wemopizajazo/gOjapij/dungeon_shooter_the_forgotten_temple_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xivomojuf/ijjadSj/pc_bus_simulator_games_free.pdfIn PDF document text
    • https://sutogibigasoju.weebly.com/uploads/1/3/1/0/131070189/1798702.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ef0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0D 5328 bytes
SHA-256: 0bd725d4820729a90e49bf720ba211a3f4385c100ecd2b580e6e824dc7f5d11d
font_01_sfnt_off00010113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10113 10924 bytes
SHA-256: 14e5036017df975347894a427b5e9fdc7420720a5391fc5de2558a0379619c6c