Malicious PDF — malware analysis report

Static analysis result for SHA-256 522e957e32771667…

MALICIOUS

PDF

80.1 KB Created: 2021-04-10 11:18:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a0a95f014280c49429d11a4195369b7 SHA-1: d163e4bb19f92afe69ceb6208a80287e85098a1f SHA-256: 522e957e3277166744ebc6b5c305453c1280d0ee2b7c9c5d32849dbc8d1ed314
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, with a high risk score. It contains multiple embedded URLs, one of which is directly referenced in the document body, suggesting a phishing or malware distribution attempt. The presence of PDF-specific heuristics indicates the file is structured to exploit PDF viewers.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/strik?utm_term=gorillaz+rise+of+the+ogre
    • http://zegererevez.medianewsonline.com/short_love_story_download.pdf
    • http://uspeh.icu/what_is_the_irishmanbv9aa.pdf
    • http://sport-stavki.fun/juwaravaseboy7k4w.pdf
    • http://monoga.space/notification_sounds_app_iphoneesi31.pdf
    • http://webilevoz.22web.org/95216186571.pdf
    • http://buyfastedcircle.xyz/fivisomixibid011op.pdf
    • http://nawitebexu.medianewsonline.com/nugomegaxazezas.pdf
    • http://barashik.space/fetal_distress_adalahg6q0n.pdf
    • http://nomiwiturej.getenjoyment.net/gypsum_board_ceiling_design_catalogue.pdf
    • http://gejurabek.getenjoyment.net/xatuwox.pdf
    • http://kieverts.xyz/setogevojitowanevojafosotomjo4.pdf
    • http://fupefabesosada.mygamesonline.org/nakiwujorumazoxax.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rajakoxefulume.epizy.com/aero_space_reports_inc_oklahoma_city.pdf
    • http://futakanawus.onlinewebshop.net/taseroxepo.pdf
    • http://losopokatefoxot.rf.gd/68328666857.pdf
    • http://sajulugebimisu.myartsonline.com/90037314203.pdf
    • http://fofomekurun.rf.gd/citroen_c4_grand_picasso_2010_owners_manual.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_off0000e620.bin
d3dc09f764943fd73a31fbc4e34b45f8da86a08289fb886c2774696299a410ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE620 6176 bytes
font_01_sfnt_off0000fb66.bin
cde9979eb1ac092f1122acd859b1a49618b04658f60f5b15ffe39c7e830f93dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB66 5112 bytes
font_02_sfnt_off00010cce.bin
740b4e09f0be8e3998505492a478a8d827e2538679fddc77cb6255d3ac42ef60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CCE 11656 bytes

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