Malicious PDF — malware analysis report

Static analysis result for SHA-256 a190a65f6ca08bc0…

MALICIOUS

PDF

77.9 KB Created: 2021-03-15 05:50:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c94aea9e624c407b42e79b3f4a57a0ad SHA-1: d20bc68b59069818c6afc8101c1bfab7f6af2711 SHA-256: a190a65f6ca08bc049812d2da23418eb297ca6dee83c022dbf55f6b96c0cc145
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a large number of external links, suggesting a link farm or phishing lure. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs indicate potential for malicious redirection or content delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://lozipotod.ru/wix?keyword=christmas+vacation+soundtrack+cd
    • https://cdn.sqhk.co/bepesewutu/dbgiPkX/secret_of_mana_ps4_multiplayer_einstellen.pdf
    • https://wuwexolajux.weebly.com/uploads/1/3/0/8/130814226/8fd4551259.pdf
    • https://vijejomikozo.weebly.com/uploads/1/3/4/6/134668467/suvuzadurule_kowugak_zagavunidadizu.pdf
    • http://rozewevojalel.sportsontheweb.net/the_hunger_games_2012_full_movie_free_download.pdf
    • https://megewesaj.weebly.com/uploads/1/3/0/7/130738707/korojegedunetozef.pdf
    • https://cdn.sqhk.co/kalusoxat/24x0Tia/zhang_ailing.pdf
    • https://kaxukododeregoz.weebly.com/uploads/1/3/0/9/130969338/c08b3a.pdf
    • https://cdn.sqhk.co/tasokuxu/fgikiiG/vikajuwapipemij.pdf
    • https://pegupirorig.weebly.com/uploads/1/3/1/4/131406852/wanavizurine_sisokesis_rupowal_gezosolom.pdf
    • https://cdn.sqhk.co/beratinuga/jljgij7/15590946598.pdf
    • https://cdn.sqhk.co/wikaraxixi/c32gdsN/offroad_cargo_jeep_driver_simulator_4x4_hill_truck.pdf
    • http://viburanufoleva.iblogger.org/call_of_duty_cold_war_new_zombies_map_release_date.pdf
    • https://zedemozotazodi.weebly.com/uploads/1/3/0/7/130776451/3543234.pdf
    • https://wusitezuredov.weebly.com/uploads/1/3/5/3/135314125/5101907.pdf
    • https://nenawobu.weebly.com/uploads/1/3/4/1/134131353/kadewefivunezugut.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/dc7c5105-4c98-48fc-ad3d-686018b5190f/how_to_start_a_candle_making_business_at_home.pdf
    • http://notavopanugatog.epizy.com/properties_of_2d_shapes_year_4_worksheet.pdf
    • http://fedonefekipide.myartsonline.com/buy_ghost_in_the_machine_beer_online.pdf
    • http://saxodanokijaj.atwebpages.com/the_congruent_complements_theorem_definition.pdf
    • http://pufupivati.epizy.com/nonafutejatuxukanexa.pdf
    • http://xewewiwuxadul.rf.gd/gisaxama.pdf
    • https://uploads.strikinglycdn.com/files/ce1f234f-d345-4481-8781-b138bc91e288/bissell_turboclean_powerbrush_pet_carpet_cleaner_shampooer_2085.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_off0000f43f.bin
8b051cb8a83d64f7a6adb01797aa6f954b5fc61560f994a3e05daf17d97688ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF43F 5176 bytes
font_01_sfnt_off000105a7.bin
ef2e1f23d370459f48a1545acd4785e7b6617108feef1178a8810dab77dd535f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105A7 10724 bytes

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