Malicious PDF — malware analysis report

Static analysis result for SHA-256 c94ab97219396115…

MALICIOUS

PDF

75.8 KB Created: 2021-03-19 18:06:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a07b6121c0cb88928aaa5ba7e24d758 SHA-1: 7bda71438edfe49cac5486ba28a575c80360b500 SHA-256: c94ab9721939611584b0e3baa264bd8e67cbce0829cceca72374cda60f82c37f
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains a lure related to a common household appliance issue, aiming to trick the user into clicking a link. The presence of numerous external links, including one pointing to a suspicious domain (xajibur.ru), and a high ML classifier score indicate malicious intent. The heuristic 'SE_REMOTE_SUPPORT_LURE' suggests the document may instruct the user to engage with remote support tools, a common tactic for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://xajibur.ru/strik?utm_term=whirlpool+washing+machine+door+locked+light+flashing
    • http://vazawujuzu.sportsontheweb.net/fubenekozisiw.pdf
    • https://cdn.sqhk.co/bimeniwog/0iaifhh/bhop_pro_mod_menu_1._9._4.pdf
    • https://cdn.sqhk.co/wixadigizal/nQ3iihb/jimmy_choo_choo_song_video_pagalworld.pdf
    • https://cdn.sqhk.co/wukufazujuv/gigdjc3/computer_launcher_windows_10.pdf
    • https://nopivetof.weebly.com/uploads/1/3/4/5/134581756/likin.pdf
    • https://cdn.sqhk.co/wekababu/8cifhjq/41530767.pdf
    • https://cdn.sqhk.co/naveropifo/ribnggo/78447616385.pdf
    • https://cdn.sqhk.co/lenubire/hhhaVNG/rimusuxipogisofivexuve.pdf
    • https://cdn.sqhk.co/tanemurad/iaNhidE/google_chrome_web_browser_app.pdf
    • https://cdn.sqhk.co/dodufiruw/6jhFgjo/smash_it_up_break_room_sydney.pdf
    • https://xevoniwibefi.weebly.com/uploads/1/3/5/9/135984774/6407351.pdf
    • http://nukapag.getenjoyment.net/80460736029.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://d4f4546a-a836-4b3d-8651-c56b89608eca.filesusr.com/ugd/3e9e83_8b2c73785f7649adb039334654343b37.pdf?index=true
    • https://s3.amazonaws.com/varolexexus/windows_movie_maker_2012_installer_free.pdf
    • https://s3.amazonaws.com/wupixufekijax/libiwevetudulelu.pdf
    • https://s3.amazonaws.com/zomuzigo/granite_and_basalt_formed.pdf
    • https://23da7c74-6e14-424a-b22a-901aa35eafb1.filesusr.com/ugd/9cc572_b274b936fb2f4f3d925e6c0bf1bfcc86.pdf?index=true
    • https://87da31d5-d184-45e7-a456-0ad082c8bd65.filesusr.com/ugd/55e94a_058dc57782e5425a8efc861afa19a4e4.pdf?index=true
    • http://woranuganavot.myartsonline.com/gubulunetav.pdf
    • https://s3.amazonaws.com/nosepevozux/babu_rambabu_song_free_320kbps.pdf
    • https://s3.amazonaws.com/laradusa/9913178001.pdf
    • http://pumikowexudat.onlinewebshop.net/92006057201.pdf
    • https://810dce77-56ab-4324-823a-3549757f4eab.filesusr.com/ugd/1fad07_96b699940a704a019488b4e705871eec.pdf?index=true
    • 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_off0000e902.bin
2b57bc7e8eb87f80ace707c5a069a4f50598ff4b60cea96bc41f6aff8bf038e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE902 5736 bytes
font_01_sfnt_off0000fc76.bin
e8f1a8db827f6b2adf0eb5585d21815457fbb63f6cf6f3bfa0d55501d8ec6bd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC76 10844 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.