Malicious PDF — malware analysis report

Static analysis result for SHA-256 970f944be6ecc6f8…

MALICIOUS

PDF

189.6 KB Created: 2021-04-10 07:46:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f5c6b54f788db6cf2e8492dcc928b83c SHA-1: ed35c680d16d5f5d295a1e63033b03dde511dd0d SHA-256: 970f944be6ecc6f82884685389397b13523f58271d1d877cd0be784bda8c87b5
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit users by presenting seemingly innocuous content to encourage interaction with malicious links.

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://dafemum.ru/strik?utm_term=cream+miniature+dachshund+puppies+for+sale+near+me
    • https://cdn.sqhk.co/gazegarov/ijbBEic/pezakaruzajilewomabuw.pdf
    • http://monstergym.ru/edit_photo_in_paint_online5q830.pdf
    • https://cdn.sqhk.co/gobajejuz/jRWhlid/brain_games_for_seniors_app.pdf
    • https://cdn.sqhk.co/relulapezele/hWgfhhM/26327038137.pdf
    • https://cdn.sqhk.co/nopawuwam/g8dighf/45671490310.pdf
    • https://cdn.sqhk.co/zawafolor/bgfyjeW/fold_up_table_and_chairs_outdoor.pdf
    • http://student-yurist.ru/how_much_does_it_cost_to_reload_300_blackoutzsisv.pdf
    • https://cdn.sqhk.co/busibelifiv/kTgKKd1/fagoseposapegazij.pdf
    • http://keto-s1.com/how_to_find_delta_shower_valve_model_number1n9lt.pdf
    • https://cdn.sqhk.co/rutisifelom/hjItjcA/sap_crystal_reports_runtime_versions.pdf
    • https://cdn.sqhk.co/xodogesazapi/cifhgba/50359419592.pdf
    • http://apsdd54gfv.xyz/diduwuwigomijibusiratmp6a.pdf
    • https://cdn.sqhk.co/rarinuva/rggibZk/57299005541.pdf
    • https://cdn.sqhk.co/tanusulirava/hh9dKjd/pinballz_austin_go_karts.pdf
    • https://cdn.sqhk.co/nujoxodove/STSibau/ratepoxegodo.pdf
    • http://smeshnoykir.space/cadette_uniform_placementcv8gb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/dd2b92e0-557b-4ce9-b455-ce9022602353/70628803737.pdf
    • https://uploads.strikinglycdn.com/files/d15b1123-1e8b-449d-a169-bf93c65bd905/tutadulafur.pdf
    • https://uploads.strikinglycdn.com/files/e1ffd21f-a9ca-486c-b9c7-282ec079a287/where_are_the_mounds_in_ohio.pdf
    • https://uploads.strikinglycdn.com/files/61a091cf-aae9-410f-8758-61a41d74b6ce/14800514799.pdf
    • https://uploads.strikinglycdn.com/files/d6ee0e0f-13d0-4da5-9390-d6d785a35421/sojanituwebog.pdf
    • https://uploads.strikinglycdn.com/files/30c71b07-d4aa-4c73-b49d-0de435fa747a/baby_girl_shoes_size_3_infant.pdf
    • https://uploads.strikinglycdn.com/files/e813d061-7a04-4400-afcd-ca078d5bdff1/how_to_create_a_pre_and_post_test.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_off0002ae24.bin
08900927d79b43343493615e9e8eb46c83117746b98bb07f7aae698eee4507a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE24 5300 bytes
font_01_sfnt_off0002bffa.bin
868b35a906754e2e34b14f475d8b8ad5083bd77cbd85043862550a42888d6f8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFFA 11648 bytes

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