Malicious PDF — malware analysis report

Static analysis result for SHA-256 6495bca8aeef3178…

MALICIOUS

PDF

34.0 KB Created: 2021-07-02 08:25:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 10bcba45c637aa3e223ad0b46fda8210 SHA-1: b11b606209964f55d28451dc25b1650302d21f63 SHA-256: 6495bca8aeef3178f289e57abdcb812b267ca3d9c17a24fa4990bf8f19799c4e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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
  • 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 http://netcdn.co/app/431946152/cerberus-roblox-download-free-game-hack PDF link annotation
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/money-cheat-roblox-tycoon_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-neon-district-hacking-how-to_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-meme_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/infinite-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/cool-roblox-high-school-cheats_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/cheat-menu-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/jump-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-free-roblox-animations_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-create-group-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-hack-strength-in-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/jailbreak-roblox-hack-speed_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-roblox-sex-games_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F91 21688 bytes
SHA-256: a9b97c898759323b0da62d2c63546735ce900b1c5bcd288f96d485fefd38b426
font_01_sfnt_off00005efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFC 19296 bytes
SHA-256: 7792cc23bd53a6c99a74118afd8a256f9d2a0bcd4104766477b2a1b1b7cfda27

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