Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db4235bee221239…

MALICIOUS

PDF

77.7 KB Created: 2021-03-27 20:32:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46ad42198b56ba1a4df85bfb0f613d01 SHA-1: acec8452b071da41fcc940f812be7affecce317d SHA-256: 6db4235bee22123946b694e4afc919818a680ab05251c6b25d08219b0b95b2d2
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'leonvi.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, suggests a lure related to a game trophy guide, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wix?keyword=burnout+paradise+big+surf+island+trophy+guide
    • http://ig-copyrightviolation.com/bartop_arcade_decalz1don.pdf
    • http://imm-shoes2.club/votidagor6zqk.pdf
    • https://cdn.sqhk.co/gixelotopa/ighejhe/steamer_for_clothes_and_cleaning.pdf
    • http://sberbank.link/68751243439l1csy.pdf
    • http://wumiwuzigimo.mywebcommunity.org/plantronics_cs510_wireless_headset_reviews.pdf
    • http://zumufufup.sportsontheweb.net/tanuwolobidajofete.pdf
    • https://cdn.sqhk.co/nogorodizet/aiffGjh/my_city_airport_apk_free_download.pdf
    • https://cdn.sqhk.co/zepipawetopi/Ahiic9L/28821272879.pdf
    • http://migerov.xyz/numb_burning_spot_on_backh6pyr.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://769966b8-4adc-437e-bba8-f198cf6e171b.filesusr.com/ugd/41a0b6_2177c40f2d9c47b68d999125ccaccf66.pdf?index=true
    • http://ziwivazud.onlinewebshop.net/sales_executive_interview_questions_and_answers_for_freshers.pdf
    • https://08b4a39d-fa16-4eaa-91be-ae90003cacb9.filesusr.com/ugd/237bf7_8caf5d7cd95e4e65a81448e0c79a7d67.pdf?index=true
    • https://s3.amazonaws.com/vipuxafol/97026698383.pdf
    • https://51f47fa2-20f7-4ec4-bb91-8ae4aee689b4.filesusr.com/ugd/917232_60b45343ddc44c34b5fe829ee47a59b9.pdf?index=true
    • http://mojogoralil.onlinewebshop.net/basic_electronics_active_and_passive_components.pdf
    • https://s3.amazonaws.com/dixaleko/asphalt_xtreme_hack_version.pdf
    • https://df256b98-640c-444d-885a-8195c7360722.filesusr.com/ugd/40b9e6_54fe640abdd746f4a3acd6bb6f92c4b4.pdf?index=true
    • https://9fb0fece-6c2a-4f8b-8ff1-5d9ea67f5ee7.filesusr.com/ugd/f6a907_0dc766de9b034c518a09ddc5fe854bb6.pdf?index=true
    • https://793776f3-68b4-44d3-947a-596ce2c6f652.filesusr.com/ugd/4e977a_6a7a2893e29e4d46ab89726e5ac04a36.pdf?index=true
    • https://s3.amazonaws.com/rutufokedizon/66866432707.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_off0000f11a.bin
2b22c266a9db6adac938c7e6f2d579f34335b6cb2b9f7f921dc1d9b264248175		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF11A 5592 bytes
font_01_sfnt_off0001041f.bin
ba6611e2e65bbaf54f9459d3d0300f8782317ec00c2e14935d362e557e902c54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1041F 11136 bytes

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