Malicious PDF — malware analysis report

Static analysis result for SHA-256 77126cf14648b405…

MALICIOUS

PDF

89.9 KB Created: 2021-02-28 18:05:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1eb47c73d816d3e0ccc4eb765fee773e SHA-1: 5fea73a62ea2da3a507af7f95da967c3f54de4cd SHA-256: 77126cf14648b4053ac190fd77582f5ffb3bd6f5082a80995f1a371f715008d5
104 Risk Score

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URLs, one of which is directly linked to a download lure for 'mw3 online mods'. The presence of a 'download button' heuristic further supports the phishing and malicious download attempt. The document likely exploits a PDF vulnerability to deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://pelibifir.ru/123?utm_term=mw3+online+mods+xbox+360+usb+download
    • https://cdn.sqhk.co/nuduniguwufo/6JOSaia/henry_danger_crime_warp_apk_mod.pdf
    • https://cdn.sqhk.co/movijomo/ha5jjhi/51930903100.pdf
    • http://huseyincanx.com/business_analytics_university_of_southern_californiafjryy.pdf
    • https://static.s123-cdn-static.com/uploads/4403952/normal_5ff13f511744f.pdf
    • http://lnstagram-helping.live/movies_to_watch_on_netflix_2020_novemberrehyy.pdf
    • https://cdn.sqhk.co/vivakawibaki/hcgjcge/dual_enrollment_georgia_highlands.pdf
    • http://sajiwurejedetu.sportsontheweb.net/what_are_the_mortal_sins_in_catholicism.pdf
    • https://cdn.sqhk.co/kolokejo/idjbDmn/linujatapoje.pdf
    • http://jojidasusesot.sportsontheweb.net/how_to_describe_creepy_trees.pdf
    • http://kukusorukabapoj.iblogger.org/13777765666.pdf
    • https://cdn.sqhk.co/vomuvojovi/shggihH/fejuzil.pdf
    • https://cdn.sqhk.co/dedogupazib/jihicid/easiest_raid_boss_destiny_2.pdf
    • https://cdn.sqhk.co/totafeta/ojahfSh/easy_homemade_black_bean_burger_recipe.pdf
    • http://alfa-quest.ru/bubble_match_bubble_shooter_mod_apknorjc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://pifutujotot.epizy.com/free_3d_building_design_software.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_off0001066b.bin
e39b9a56b48f5575f0e828d45297fd4dc416e72cd274dc698a946c0fac7a843b
pdf-font-stream PDF embedded font (sfnt) at offset 0x1066B 5440 bytes
font_01_sfnt_off000118da.bin
cdece2a57e4efb27dd69a644496a96356935c7207180651aa157475cc12c326b
pdf-font-stream PDF embedded font (sfnt) at offset 0x118DA 15792 bytes
font_02_sfnt_off00014aa0.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x14AA0 4324 bytes