Malicious PDF — malware analysis report

Static analysis result for SHA-256 3045220ff4961137…

MALICIOUS

PDF

73.8 KB Created: 2021-02-26 21:15:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e8140ba07adbb5e99e0f9231d6c9a3a6 SHA-1: 55fcb47dab1f70d4e1afb614447befecb9f4237c SHA-256: 3045220ff49611370acf5b5ce9d774b050520a84ec4824dd723baad8d5d2a95c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of 'Dracula book online' in the document body, combined with the numerous PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics, indicates a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/strik?utm_term=dracula+book+online PDF link annotation
    • https://cdn.sqhk.co/wujukipako/lhoiggd/99650177122.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417815/normal_5fe8789a91726.pdfIn PDF document text
    • https://cdn.sqhk.co/pixukinoma/bhi6gfD/white_background_remover_png.pdfIn PDF document text
    • https://cdn.sqhk.co/daborofus/cibifNz/pixel_gun_3d_game_online_unblocked.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419628/normal_5fd1612b004b2.pdfIn PDF document text
    • https://cdn.sqhk.co/kelopifagisu/hfhiWha/derwent_artist_watercolor_set.pdfIn PDF document text
    • http://opssmall.space/livre_de_regle_warhammer_40000_v8qe8rr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492536/normal_602f175e2c86c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372719/normal_5fea35085121b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420438/normal_5fe116cda9720.pdfIn PDF document text
    • http://immortal-sho.club/metetanemevobatowortcux6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446494/normal_5feb350aa647b.pdfIn PDF document text
    • http://aov.one/benekidikuzefizutz77s6.pdfIn PDF document text
    • http://mmeueue.space/jelozopapidexefef3jcrb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493867/normal_6000f353831f6.pdfIn PDF document text
    • http://circus.market/chapter_2_summary_of_the_watsons_go_to_birmingham-1963htres.pdfIn PDF document text
    • https://cdn.sqhk.co/roduxokixuzi/erRgd1T/ouroboros_symbol_in_movies.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417983/normal_601e21e442f7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423714/normal_602fa107e9846.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/chamma_chamma_song_djpunjab.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/schneider_electric_altistart_48_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/wixoga.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_off0000e53f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE53F 4820 bytes
SHA-256: d458f2b56c5d40be440cfc66aff481f012ae9a7d2fb102c6e3125b41fa09e3ae
font_01_sfnt_off0000f5b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B3 10640 bytes
SHA-256: b47dcc1ab99e3df653f376dcbabf362f1db175a17a0b7e3785e14233691435a7

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