Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb0cf7ea0c6e86a5…

MALICIOUS

PDF

136.9 KB Created: 2021-03-30 23:06:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 249fcac3d41f0b4a358af7c44f7e7c30 SHA-1: 43f68a15b058bbd8dd3133f1a7bc18a4d35d7f82 SHA-256: eb0cf7ea0c6e86a561c59f5cc9a0079a3c8611e49d82b2e22304ecd9560341e1
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'botokaw.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to trick users into navigating to external, potentially harmful, resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://botokaw.ru/wix?keyword=wii+backup+manager+iso+problem
    • https://fovodonote.weebly.com/uploads/1/3/2/7/132740633/9c387f.pdf
    • https://cdn.sqhk.co/kugefiruxat/hhgc4ii/47877683731.pdf
    • https://cdn.sqhk.co/mogizufofuj/jiejg3c/53044681395.pdf
    • https://nudegono.weebly.com/uploads/1/3/4/6/134682657/kisedemopuni-xagesukiv-ladikexaxu.pdf
    • https://cdn.sqhk.co/razotefo/stSD0ia/59284206939.pdf
    • https://cdn.sqhk.co/govamopega/Ciagcgi/38230405085.pdf
    • https://cdn.sqhk.co/wokowuvawuz/hdigig7/descargar_dead_zombie_sniper_frontier_2018_mod_apk.pdf
    • https://cdn.sqhk.co/kolazapikib/hgjjgaM/5234841054.pdf
    • https://rimudidux.weebly.com/uploads/1/3/4/5/134597050/mosuxovameratom.pdf
    • https://junezafebu.weebly.com/uploads/1/3/0/8/130874287/7455645.pdf
    • https://cdn.sqhk.co/gobikazifelo/NhcgiMp/fowum.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2f77a584-24a4-4302-9cf6-b741b2ea44d3/computer_basic_course_certificate.pdf
    • https://s3.amazonaws.com/najubu/vsco_cam_full_apk_2019.pdf
    • https://s3.amazonaws.com/kubafezin/concord_furnace_parts_manual.pdf
    • https://uploads.strikinglycdn.com/files/66ed43c4-915b-4dc6-874b-1f3f081ea289/27822908524.pdf
    • https://s3.amazonaws.com/wixanarer/os_buddenbrooks_thomas_mann.pdf
    • https://uploads.strikinglycdn.com/files/abeb544e-4617-4700-9231-9a9f2f886836/is_fl_studio_a_monthly_payment.pdf
    • https://uploads.strikinglycdn.com/files/69ec5746-af68-43e1-8b85-1c4f6da31dd6/bosogepifijigeka.pdf
    • https://s3.amazonaws.com/wefadep/ashab_e_kahf_series.pdf
    • https://uploads.strikinglycdn.com/files/baec9b2b-93dd-401e-9399-b1ceb4723fb8/how_to_unlock_iphone_5s_tracfone_for_free.pdf
    • https://s3.amazonaws.com/zumomasugipeno/porudugijevunesodewele.pdf
    • https://s3.amazonaws.com/jadere/panasonic_kx-tga405b_range_extender_for_dect_6.0.pdf
    • https://s3.amazonaws.com/fedufiporara/33648609004.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_off0000f5fd.bin
32afb029f49acaeef4c4ad7a1b3979981f7cc4ef083034d9d09cfe316a37069d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5FD 77280 bytes
font_01_sfnt_off0001dcd4.bin
2dc72dfc1779f479886f912c4ee626fd28fff2647ce9cf7f40ff34c32f72f8c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1DCD4 5472 bytes
font_02_sfnt_off0001ef68.bin
c9f18d5536ad582aa13f022a75478eeb940705104b61ba314a7232cad77cbc73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1EF68 12104 bytes

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