Malicious PDF — malware analysis report

Static analysis result for SHA-256 16ead825a95d9113…

MALICIOUS

PDF

77.1 KB Created: 2021-03-23 15:11:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68d5235450d8db161291636f94052a6a SHA-1: 2b33d4db2559ce4ce572d8147065dbf5dcd9ff37 SHA-256: 16ead825a95d91134d9387b3d3d8817e9e07f4c0bba7de56980951c450ceefe8
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with the primary one appearing to be a phishing lure disguised as a search result. The PDF structure and embedded content suggest it is designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://soxebez.ru/award?keyword=area+of+a+circle+formula+pdf
    • http://cashthe.ru/23502208244iw1ob.pdf
    • http://muldwych.com/how_to_program_the_honeywell_light_switch9vv6l.pdf
    • https://cdn.sqhk.co/dutaxato/2buhcjh/payback_2_the_battle_sandbox_apk_hack.pdf
    • https://cdn.sqhk.co/tiruxugajo/hfapWgi/13924481623.pdf
    • http://texno3ua.com/464697580868wikh.pdf
    • https://cdn.sqhk.co/nadetajagupe/Cjdghib/95569820259.pdf
    • http://afracheat6.xyz/wipeladobuvuzagawobudiu.pdf
    • http://gbo.guru/turudeweradiulz8n.pdf
    • http://govnosiakxws.online/can_cortisone_shot_affect_sleepx77na.pdf
    • https://tebafazar.weebly.com/uploads/1/3/4/2/134265880/durubidofi-vejotafure-zivakunudur-muselubalevop.pdf
    • http://poopo.ru/braun_series_7_parts_canada1uuq5.pdf
    • https://cdn.sqhk.co/pefibovip/4jhagch/anime_live_wallpaper_android_4k.pdf
    • https://levarimabogi.weebly.com/uploads/1/3/5/3/135328943/taxeg_velubag_nijex.pdf
    • http://abanca-electronica.com/action_driving_school_pharr_texaszf4qi.pdf
    • https://cdn.sqhk.co/madagijoj/7zMkv5S/tron_light_cycle_game.pdf
    • http://rezltml.xyz/94888334882bzuwm.pdf
    • http://blekrossi.ru/how_to_use_an_electric_egg_boiler5e773.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/319d2012-ec28-45b7-b4c5-d3c87e5f5f65/90959182379.pdf
    • https://s3.amazonaws.com/jasadavebaga/bennett_movement.pdf
    • https://s3.amazonaws.com/tolivajupeku/37082758927.pdf
    • https://s3.amazonaws.com/poguvelefa/50092673741.pdf
    • https://uploads.strikinglycdn.com/files/d3eda091-4d94-4243-a5fb-97b1d85cb681/zumakirudisokevibi.pdf
    • https://uploads.strikinglycdn.com/files/f19f9e7d-538c-4213-af9d-412d7aa312e5/is_cyberpunk_multiplayer_cross_platform.pdf
    • https://uploads.strikinglycdn.com/files/233a8248-c019-47bf-b266-e6383f810be8/when_you_pray_for_rain_deal_with_the_mud_too_movie.pdf
    • https://uploads.strikinglycdn.com/files/a33288ba-4cec-4afb-8b59-9e678de5e265/34740835840.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0e1.bin
e15e1b5969f3f9de7fc4bc485fb92eb1e147ab35ee0e10c8aaacc64f227630d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E1 4808 bytes
font_01_sfnt_off0000f135.bin
83093104b44204447b8efb9a48727741e73848cba7096833a8fa25154aea7d35		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF135 12064 bytes
font_02_sfnt_off00011886.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11886 4324 bytes

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