Malicious PDF — malware analysis report

Static analysis result for SHA-256 763e3e4699c07f03…

MALICIOUS

PDF

72.8 KB Created: 2021-02-24 20:42:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2e6248865c544f4929187c6fc8db26de SHA-1: 4d5122226ec80355fca737b6759dc37107431370 SHA-256: 763e3e4699c07f0309bec2790ec42cdde1ab3098b133ca243406225ed82ff9c4
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://bologen.ru/award?keyword=how+to+set+a+thermostat+in+your+house PDF link annotation
    • https://cdn.sqhk.co/nikajovefer/ihyrCha/astronomia_dancing_hop_coffin_dance.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416669/normal_5fc9451d36ec2.pdfIn PDF document text
    • https://digokevun.weebly.com/uploads/1/3/4/7/134747151/nasuvamuwogavojanuw.pdfIn PDF document text
    • http://fresh-ita.fun/virtual_table_tennis_hackjl0am.pdfIn PDF document text
    • http://www-sfr-fr-monespace.com/71811576281vznxw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383698/normal_5fcecf4b2d2c2.pdfIn PDF document text
    • https://fumevido.weebly.com/uploads/1/3/0/8/130874276/7537305.pdfIn PDF document text
    • https://cdn.sqhk.co/nemuvefik/bziagi2/sanitarium_blues_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/wazafepel/FMggghC/modern_warfare_warzone_server_lag.pdfIn PDF document text
    • https://cdn.sqhk.co/bafujifi/Y7hfhfe/jeopardy_playshow_review_xbox.pdfIn PDF document text
    • https://bojibelatos.weebly.com/uploads/1/3/4/0/134040608/bijutigoxasopepuran.pdfIn PDF document text
    • http://winoorama.website/45838770717l2prc.pdfIn PDF document text
    • https://cdn.sqhk.co/niserutom/wVcwidt/snakes_on_a_plane_meme_generator.pdfIn PDF document text
    • https://cdn.sqhk.co/napumefu/e3qvwig/mx_player_pro_apkmirror.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nosikugabuvisal.epizy.com/pharmacy_books_free.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_off0000e08b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE08B 5048 bytes
SHA-256: e180228d60b416a42fedc76e8e3478918d1b8c899f5ec24c1858e6244ea72282
font_01_sfnt_off0000f19b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF19B 10660 bytes
SHA-256: c374cb6a4ff6c4508dc1bdc60b7e9cf3a7592dfd213a86455167e07c9c7a09bf