Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f4aaf6b1aa42c55…

MALICIOUS

PDF

73.2 KB Created: 2021-03-03 16:31:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b20480480c79de03d67a5438a61f03d0 SHA-1: 8da3668740bf9e68827a4dd51e313a95457b7faa SHA-256: 7f4aaf6b1aa42c55fcce26445ee6715a4ccc51071133768249e283ad89723e2e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://midufefew.ru/award?keyword=miguel+street+characters PDF link annotation
    • http://form-lnstagramcopyrightservices.com/alchemy_beginners_guide_skyrimsbi7n.pdfIn PDF document text
    • http://beststudent.fun/final_fantasy_8_card_game_guideylzfw.pdfIn PDF document text
    • https://vekadewozume.weebly.com/uploads/1/3/0/9/130969331/5367306.pdfIn PDF document text
    • http://antinomi.design/lunowetoq8pex.pdfIn PDF document text
    • https://cdn.sqhk.co/pugudanirav/bhjc0GP/letupuriwemumim.pdfIn PDF document text
    • http://kvyovk.xyz/79055234665cnk9g.pdfIn PDF document text
    • http://wubewaxipezopi.22web.org/bowflex_xtreme_2_se_home_gym_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/dicjdaT/68465438199.pdfIn PDF document text
    • https://lelibajoterudu.weebly.com/uploads/1/3/4/0/134042739/3f91face10a.pdfIn PDF document text
    • https://cdn.sqhk.co/figakeves/Lhidgi7/dukekolufopajedozidapoluv.pdfIn PDF document text
    • https://gatodewa.weebly.com/uploads/1/3/4/6/134627503/2242230.pdfIn PDF document text
    • https://zemabata.weebly.com/uploads/1/3/4/6/134677216/5827393.pdfIn PDF document text
    • https://cdn.sqhk.co/nizekidido/b74mhcO/download_game_rocket_racer_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kebafitesulodu.epizy.com/78456361836.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/d-link_dir-890l_ac3200_router.pdfIn PDF document text
    • http://tirisesu.onlinewebshop.net/is_1050_ti_better_than_970.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_off0000e407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE407 5064 bytes
SHA-256: 41e65ba597062f7206af2e70766af546eaa3cc492fbf87cb04ea2b84e0a68c2d
font_01_sfnt_off0000f54e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF54E 10204 bytes
SHA-256: 0a3b49151cd6a19e62d3a5c1896204613ccc6413c5fac86691fc319abca9197c