Malicious PDF — malware analysis report

Static analysis result for SHA-256 906cbc11f1c1c2d8…

MALICIOUS

PDF

76.9 KB Created: 2021-03-08 03:13:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 773f8a01dd6f608ef1fa8d25b2c64019 SHA-1: d83d9c4dde51c360edb7f4dd2a87266ccce0fdf8 SHA-256: 906cbc11f1c1c2d829fa681b6f86384aec8befb23afc84ccced59b7edbdead0b
134 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, suggesting a link farm designed to host malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded URIs are indicative of a phishing lure attempting to trick users into downloading further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://resalured.ru/wix?keyword=liger+xs300+manual
    • http://fikosarodone.medianewsonline.com/suliforofagavabebafu.pdf
    • https://cdn.sqhk.co/fetedudi/hjOzCVe/96500175894.pdf
    • http://instapriz.online/journey_to_the_west_the_demons_strike_back_full_movie_in_hindi_download_hde1uzd.pdf
    • http://gosejoligezo.iblogger.org/mbd_english_guide_10th_class_pseb.pdf
    • http://becloud.website/66900645554x82gy.pdf
    • http://dalifajebuxog.scienceontheweb.net/how_to_fix_retail_lock_on_toshiba_tv.pdf
    • http://pirewarekow.mywebcommunity.org/frigidaire_upright_freezer_service_manual.pdf
    • http://fakurivevid.scienceontheweb.net/fiwonovizexoseru.pdf
    • https://cdn.sqhk.co/wokuvaxevaji/3bgh4hb/ronaldo_jump_goal_height.pdf
    • http://zikewexer.scienceontheweb.net/fulimodefejaz.pdf
    • http://sandwichhq.club/vobomirituluj8hew.pdf
    • https://cdn.sqhk.co/zatovafer/UKjjYM1/fall_guys_guide_ultimate_royale_game.pdf
    • http://lilubaxubaxulu.sportsontheweb.net/what_alexa_commands_work_with_samsung_tv.pdf
    • http://ig-copyrightviolation.com/76990076099ad3zt.pdf
    • http://ukranews.site/8229245815382w6n.pdf
    • https://cdn.sqhk.co/kazamepa/Qakjihg/world_breaker_hecarim_skin_spotlight.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gasukexopesifu.epizy.com/10084492819.pdf
    • https://uploads.strikinglycdn.com/files/b4edc3d4-e706-4401-bd62-492d69d7dae5/samsung_galaxy_a10e_screen_repair_kit.pdf
    • http://netawuwimirixor.onlinewebshop.net/59263830577.pdf
    • https://uploads.strikinglycdn.com/files/9c50272c-ce60-4774-a716-fdafd875ab67/who_is_norton_in_the_pigman.pdf
    • https://uploads.strikinglycdn.com/files/221f2b14-443c-47c4-b2c4-a21999803319/51811670945.pdf
    • https://uploads.strikinglycdn.com/files/ab55ebed-6ca6-41ca-a254-e3aaad1fa317/cdr_data_analysis_software_free_download.pdf
    • http://gawoloresi.rf.gd/commodores_easy_sheet_music.pdf
    • https://uploads.strikinglycdn.com/files/b3f37bc4-afdc-49fd-af64-9b03d5b374ba/41126798576.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0c2.bin
2b52afac8cf2ceefa9726826de572ef377162ce899c558c0476fecf22ab5721a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C2 5320 bytes
font_01_sfnt_off000102d0.bin
994620049cd70ff5b42bfb857bfeabe13b1057ae12650e0d9e05fb4479c7a8a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102D0 10336 bytes

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