Malicious PDF — malware analysis report

Static analysis result for SHA-256 db3fbbda8e14b19b…

MALICIOUS

PDF

76.5 KB Created: 2021-04-05 17:16:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3ee7557f2b5e468ba332262c6e1611f SHA-1: 74278c26a14081de6ed2d3327f771f71e0b1faf7 SHA-256: db3fbbda8e14b19b558c8ea7f904b575e44982a2a3ae6b9bbc96dc1b213f575a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that redirects to a URL associated with game mod downloads, suggesting a phishing or malware distribution lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI point towards a malicious document designed to trick users into visiting a compromised site.

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://leonvi.ru/wix?keyword=apk+dragon+ball+z+dokkan+battle+mod
    • https://cdn.sqhk.co/famagafe/sRgdjaE/interstellar_rocket_league_worth.pdf
    • https://cdn-cms.f-static.net/uploads/4446289/normal_6042e4b9718e3.pdf
    • https://cdn-cms.f-static.net/uploads/4454301/normal_60280fb9b0aed.pdf
    • https://cdn-cms.f-static.net/uploads/4479460/normal_5fda6f0128b18.pdf
    • https://cdn.sqhk.co/pelonulu/aTijjdr/lenolumimivuwategasazap.pdf
    • https://cdn.sqhk.co/sowodopevew/bZpDAcy/electric_train_station_near_metlife_stadium.pdf
    • http://vomamafawib.scienceontheweb.net/blockchain_books.pdf
    • https://cdn-cms.f-static.net/uploads/4415519/normal_601aeb37aa156.pdf
    • http://jalosus.mygamesonline.org/arthur_spiderwick_s_field_guide.pdf
    • https://static.s123-cdn-static.com/uploads/4413983/normal_5fec06321ec65.pdf
    • http://lamaded.mywebcommunity.org/77084771047.pdf
    • https://cdn.sqhk.co/vuvupewog/YW1gghc/song_of_the_sea_movie_quotes.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2aea13cc-6d15-4f6b-907b-4d8954acda30/checklist_when_buying_a_car_privately.pdf
    • http://kikanelomer.onlinewebshop.net/sociology_and_anthropology_of_development.pdf
    • https://uploads.strikinglycdn.com/files/a6d06570-5560-4e9d-be6e-abf92ceebdb7/jilumam.pdf
    • http://gixopiv.onlinewebshop.net/school_essay_in_english.pdf
    • http://kufekisawisewo.onlinewebshop.net/rupuba.pdf
    • https://uploads.strikinglycdn.com/files/c6f56a36-14c9-40cd-be6f-e660418cc756/58878241693.pdf
    • https://uploads.strikinglycdn.com/files/ca145b7f-b2f0-4c62-8152-de3b7700b6f0/free_printable_student_information_sheet_for_teachers.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_off0000eda2.bin
aafa96967551a380fe30fe7183d2b4265ac9f5e81e49c3da0b82782a75e740c2
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA2 5344 bytes
font_01_sfnt_off0000ffc1.bin
611c0ee802f72ff93fbba7adff3e3d78fbc6ba1b388beed27a51cd3efbc9f757
pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC1 10308 bytes