Malicious PDF — malware analysis report

Static analysis result for SHA-256 d92d9c7fc02f55e0…

MALICIOUS

PDF

76.7 KB Created: 2021-04-03 05:34:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4a25d47a66c369c3f3f70b98b9e0defe SHA-1: 7006175fd22def29bb45c1ccbe9ced986ce0ba4e SHA-256: d92d9c7fc02f55e089751a43a7711be4279a29b1ba294399923d9b7d6980f1f0
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • 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://midufefew.ru/strik?utm_term=why+does+my+lg+washer+say+ue PDF link annotation
    • https://cdn.sqhk.co/getabemuto/jeP1Njf/osm_guide_app.pdfIn PDF document text
    • https://cdn.sqhk.co/vefapatape/vDM4ib6/wotubineridad.pdfIn PDF document text
    • http://dejevixumuvele.22web.org/36600512608.pdfIn PDF document text
    • http://securityverifiedservices.com/zalinavirikamawepibajobap7prm2.pdfIn PDF document text
    • http://obuv-kozha.ru/the_poky_little_puppy_first_christmas_1973x356n.pdfIn PDF document text
    • http://garant-ritual.online/kitchenaid_coffee_burr_grinder_reviewuymjg.pdfIn PDF document text
    • http://easterthjg.com/30513710647mqw63.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/353e37e2-59e3-4bb9-bee8-8bec614a802f/electronic_battleship_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/sabulape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e56fce3f-bd98-4b09-87cf-01349f42c60c/inkscape_illustrator_export.pdfIn PDF document text
    • http://vowurosato.rf.gd/antihistaminic_agents.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/rikazuvururop.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/jijatiwoxilexokazokabek.pdfIn PDF document text
    • https://s3.amazonaws.com/dafumuxitupav/what_colors_are_netherland_dwarf_rabbits.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/barakallahu_feek_answer.pdfIn PDF document text
    • http://senegowafev.epizy.com/71645523925.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/bilge_pump_manual_wire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e837a5a3-6199-47f1-b3c6-c045b78c4f8d/51821927140.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/is_it_wrong_to_pick_up_a_girl_in_a_dungeon_light_novel_volume_1.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/free_sheet_music_barcarolle_offenbach.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9302b1f-2804-44b2-a890-ae4d5f136666/frigidaire_dehumidifier_70_pint_with_pump.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/delta_state_binaural_beats.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/covid_19_work_policy_ca.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_off0000ef2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2C 5448 bytes
SHA-256: d4620a10697485d0ac9cc6ce9b7f48024f9fc176eccbf206b761e3df2ee8a670
font_01_sfnt_off000101a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101A3 10368 bytes
SHA-256: 47a13d7d16938721bb40c9d5e6f34eded7e0807430605b60973faffa414ca44b