Malicious PDF — malware analysis report

Static analysis result for SHA-256 7818bd96a6a0a2a4…

MALICIOUS

PDF

198.6 KB Created: 2021-04-15 10:55:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 93df5ac677a619283a738b9b5887b0a4 SHA-1: aef3704c4aa2e2fc9147b7eff4928776553a27e9 SHA-256: 7818bd96a6a0a2a48de5f68cca8c780237f8c26fbd9c5f500b3c927dba2a71d4
104 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, disguised as a link to a book. ClamAV detection and ML classification strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9883

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://botokaw.ru/strik?utm_term=diana+gabaldon+outlander+series+book+9 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416806/normal_60562d4225d27.pdfIn PDF document text
    • http://pixunune.sportsontheweb.net/change_management_strategy.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/CtgeAkE/xujugu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388181/normal_6061c0271cb74.pdfIn PDF document text
    • https://cdn.sqhk.co/fosojatesog/IsWih6N/finally_ants.pdfIn PDF document text
    • http://naliputa.mywebcommunity.org/how_to_use_a_cen-tech_digital_multimeter.pdfIn PDF document text
    • http://ribadubeko.scienceontheweb.net/20511467199.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380531/normal_60658954d5408.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425913/normal_600e0378e8ae9.pdfIn PDF document text
    • https://cdn.sqhk.co/vilomikov/jYR0hb6/solar_system_planets_for_kids.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd04d621-dcc9-458e-a047-bc5853101ba3/73049021173.pdfIn PDF document text
    • https://b84c3727-5d5a-4c5d-9d5d-21cac87b3a69.filesusr.com/ugd/fdd6c2_57052f0725424a71a0f2570a2600a137.pdf?index=trueIn PDF document text
    • https://6440a9f6-5e82-4153-977b-4ffe9374ec4a.filesusr.com/ugd/7182f3_6f4c3975cd594129b1f29b5780dc42c3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/80830c6e-ebea-4cfc-ae97-f2fc677d4518/biraganosiwegosonulavulu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c344bd6c-ec98-4293-8cf4-6993408f800e/how_to_enter_data_in_a_file.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82be5d13-3fe1-4c59-aebc-8c390b4c59a0/plantronics_backbeat_fit_3100_issues.pdfIn PDF document text
    • http://zewadomi.myartsonline.com/98279386840.pdfIn PDF document text
    • http://xalixonawi.atwebpages.com/chuyn_i_file_sang_file_hnh_nh.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be0c5ea1-e84b-46c9-b4ae-9a8b2d632f74/mofil.pdfIn PDF document text
    • https://b9a4c3d6-4ccf-4d04-9b0f-c2e9c357e15d.filesusr.com/ugd/e5cbe5_1ff59d709ae14880976edeb440c3d254.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8ed2d38-85a3-4433-91e5-2626f989bbc4/72670076675.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002cd0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD0C 5352 bytes
SHA-256: 5cdeca84af491d46e85ec15907d57f3f12a9d6ed56cefd4b764f7b263d8385d6
font_01_sfnt_off0002df4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DF4E 13340 bytes
SHA-256: c6df5a6ad3476ab68076e90df78b328f9bf600e52d11607d1fc195665c71b78c

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