Malicious PDF — malware analysis report

Static analysis result for SHA-256 26692636b8c5c7f0…

MALICIOUS

PDF

76.8 KB Created: 2021-01-31 09:44:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e10de7696a60cf540b60e62e9bdb441d SHA-1: b2fecaddcaf5c82350e0fb521abdb7d72d3bec5e SHA-256: 26692636b8c5c7f0317fefcf61ff7cf1a8495acdf735e682ee6caa81f775dc2b
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wb?keyword=shooting%203d%20printed%20glock PDF link annotation
    • https://cdn.sqhk.co/moviferu/RgiZ3ie/germany_chat_meet_new_friends.pdfIn PDF document text
    • https://cdn.sqhk.co/jakufomego/KaigeWB/detafogipukux.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422912/normal_5ff17c5b85f92.pdfIn PDF document text
    • https://cdn.sqhk.co/luvutagawata/bgegcF5/cute_animated_gif_images.pdfIn PDF document text
    • https://cdn.sqhk.co/zurefaxenov/g4Chjgq/wehrmacht_vs_ss_battle.pdfIn PDF document text
    • https://cdn.sqhk.co/rorajakura/jjObGge/67791520520.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/gcjgvhc/forest_wallpaper_hd_for_mobile.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376625/normal_5ffe28060b12e.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/rYSgctD/disney_movie_trivia_questions_and_answers_multiple_choice.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzaxube/nQxijB6/world_soccer_champion_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443619/normal_600bc4e73007b.pdfIn PDF document text
    • https://cdn.sqhk.co/xasexuwosul/jevyuid/minecraft_world_editor_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/sepetuvab/ZEOeAb8/32318610103.pdfIn PDF document text
    • https://losanuritajog.weebly.com/uploads/1/3/4/7/134730792/80b4d7e2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mirabawuwoku.epizy.com/yamaha_emx5016cf_powered_mixer_manual.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_off0000f18b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF18B 5276 bytes
SHA-256: 75b8017dcba474c0b1e4fa1307f2f77137c8e984ae6c8b6cee06edbc12d01dce
font_01_sfnt_off00010381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10381 10184 bytes
SHA-256: 0d17c3cffd0e2c270a17599c6a8526a4f1003d3e1334d9d73eba8f912dce4706