Malicious PDF — malware analysis report

Static analysis result for SHA-256 02dbe65bb6fd366a…

MALICIOUS

PDF

97.9 KB Created: 2021-03-02 02:59:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 854e17a6619763824f0f98dae794c5ce SHA-1: 5f988f0df629c81a508138da7aa831c520a28c77 SHA-256: 02dbe65bb6fd366a6c62bbde7d91b5c0754e7dc456c01c9ce75eb0ae61109d77
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. Although no scripts were directly extracted, the PDF structure and embedded links are indicative of a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://leonvi.ru/strik?utm_term=diary+of+a+wimpy+kid+book+13+release+date PDF link annotation
    • http://price-list.moscow/exercice_cercle_cm1drzp0.pdfIn PDF document text
    • http://ozalupa.space/pathfinder_bestiary_2_download_freex55ah.pdfIn PDF document text
    • http://jonebukusopovet.mygamesonline.org/how_to_identify_safety_issues_in_the_workplace.pdfIn PDF document text
    • https://cdn.sqhk.co/mujekesire/FjgjhXV/fawupomomuzijaret.pdfIn PDF document text
    • https://cdn.sqhk.co/dilipokoje/ggYfijL/cover_orange_journey_pirates_level_11.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/jaih4Jo/63692595997.pdfIn PDF document text
    • https://cdn.sqhk.co/zavilisuga/ihgoyVI/tosevujitanirugoxanoji.pdfIn PDF document text
    • http://fegalaro.iblogger.org/48653499269.pdfIn PDF document text
    • http://vaxiliwu.medianewsonline.com/2005_honda_accord_maintenance_light_flashing.pdfIn PDF document text
    • http://submonster.xyz/40715852033wcoim.pdfIn PDF document text
    • https://cdn.sqhk.co/mofinopedas/gfji6SA/ac_odyssey_atlantis_gameplay.pdfIn PDF document text
    • https://cdn.sqhk.co/nuwezomu/hfjfieB/usa_soccer_world_cup_2026.pdfIn PDF document text
    • http://mjawebdesign.net/define_standard_enthalpy_change_of_formation_in_chemistrybhd4e.pdfIn PDF document text
    • https://cdn.sqhk.co/dodalowogiv/4gerAig/61051571240.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzosiboweja/5T5jije/lizezedes.pdfIn PDF document text
    • http://josowivofowog.iblogger.org/shark_navigator_lift-away_deluxe_nv360_upright_vacuum_review.pdfIn PDF document text
    • https://cdn.sqhk.co/mekaxosur/ivpmiii/super_troop_clash_of_clans.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/fovezewi/88735176923.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/modern_tri_fold_brochure_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/free_water_splash_brushes_for_photoshop.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/attack_on_titan_season_4_episode_4_release_date_sub.pdfIn PDF document text
    • http://lepugip.epizy.com/gijifegenosarunewiwerokep.pdfIn PDF document text
    • http://xufizup.rf.gd/45236918844.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000119e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E6 5800 bytes
SHA-256: 5c7c69a734da65b53627be981d8d72fd87021f4647f05f3900a1c74298565dc6
font_01_sfnt_off00012db1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DB1 5628 bytes
SHA-256: d39fd666d56843f9b1642c1cad2267f32cfe4938110536457fd2f9fe4a5c4761
font_02_sfnt_off00013d4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D4B 11148 bytes
SHA-256: 9c3a8ae0f22607f277fd1270ead4bad3759d933984ece3642585ac0f72bd924d
font_03_sfnt_off00016395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16395 16168 bytes
SHA-256: 0216150ac0e5ade23b072752459620ec704bdac01526bfbadd96d51f96873ef3