Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d015296d707c141…

MALICIOUS

PDF

78.0 KB Created: 2021-03-23 16:23:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 326d8de4edb9438f64580b4e3b0deccb SHA-1: 537fc316d79b87dd31c240a745b0b678a7e0fc63 SHA-256: 2d015296d707c14186d77da1987775ce33ab1243f6ad0c82d3638bd2b8777d6a
136 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. A heuristic identified a lure for remote support tools, which is a high-risk indicator in unsolicited documents. The embedded URL points to a suspicious domain, likely used to host or deliver a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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://kuzutuzo.ru/wix?keyword=anthropod+vs+arthropod
    • https://cdn.sqhk.co/baruduwege/ljfFhhO/best_apple_watch_qi_charger.pdf
    • https://cdn.sqhk.co/xipitufekaru/ebjenzO/rail_rush_2_silvergames.pdf
    • http://raxawevamavox.getenjoyment.net/countable_and_uncountable_nouns_definition.pdf
    • http://siwosupegejolop.medianewsonline.com/engineering_drawing_tools.pdf
    • http://zonuvak.medianewsonline.com/dajudavuvuvutujojokefe.pdf
    • http://xibawolafubiz.getenjoyment.net/71833932046.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dipagepe.atwebpages.com/88519370869.pdf
    • https://s3.amazonaws.com/pafexegud/gokosikibilawamev.pdf
    • https://s3.amazonaws.com/bokofapig/34595455101.pdf
    • https://s3.amazonaws.com/vasofirida/difference_between_average_velocity_and_uniform_velocity.pdf
    • http://xefoxiwuwoxoja.rf.gd/population_du_cameroun_en_2020.pdf
    • http://wikuwasifoturu.epizy.com/how_to_be_osha_certified.pdf
    • https://s3.amazonaws.com/julaxel/kitchen_interior_design_website_templates.pdf
    • https://s3.amazonaws.com/lomiwexuva/mekugofowimipal.pdf
    • https://s3.amazonaws.com/nosepevozux/kudumowiminovamepo.pdf
    • https://s3.amazonaws.com/xumakomowi/69347223708.pdf
    • http://namofigironebej.epizy.com/mapa_metro_sp_2020.pdf
    • https://s3.amazonaws.com/jusuberu/monthly_calendar_template_excel_free.pdf
    • https://s3.amazonaws.com/legobegutulo/no_game_no_life_sora_x_reader.pdf
    • http://gatituz.rf.gd/how_to_use_a_masterbuilt_smoker_electric.pdf
    • https://s3.amazonaws.com/jodabiladezot/jabijazowosove.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_off0000f38a.bin
646b90cf8731dbc3bb38ba7e1c8b5518386407ef09236515e0dfc43328071bf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF38A 5064 bytes
font_01_sfnt_off000104be.bin
02b7f645d3402143847a2e8b8f45a4daaa094315354fee7cf3604ef55c2ac0b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104BE 11156 bytes

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