Malicious PDF — malware analysis report

Static analysis result for SHA-256 3de3d86fc1ef8b69…

MALICIOUS

PDF

35.6 KB Created: 2021-07-03 11:28:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 946cb0509541afaa07d6c63f8c98767e SHA-1: d4e54b7b5ddc2a74b70aafb3118fb9ac0d586dd2 SHA-256: 3de3d86fc1ef8b69582303aceaf1d0e05e7df9399f8cd365ac980c59491cd602
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.tw/app/479516143/minecraft-pe-hacks-2021-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/is-kinetic-code-going-to-be-free-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hacks-no-download-for-counter-blox-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-sword-fighting-tournament-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hacks-for-build-a-boat-for-treasure-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-games-free-games_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/esp-x-ray-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-codes-for-items_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-games-for-free-for-kids_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/cheats-for-jailbreak-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-link-today-haktuts_GM406889139.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
stream_002_off0000337e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x337E 23244 bytes
SHA-256: 25a88416565886b431ac85bf12214737fb0a3213af9f80ab964325acf20f8159
font_01_sfnt_off000067ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67AE 18580 bytes
SHA-256: 4f1a648823b78734f4c2f4307c349e49cb3bfd5b784a9f97249a409e527b1611

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