Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4547970708301a2…

MALICIOUS

PDF

34.0 KB Created: 2021-06-25 14:05:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: fd23b902ca4f2e3f8521f15d2fe5c0d7 SHA-1: a993fa0aa53620e2c84c137d6151afe8ca8df678 SHA-256: f4547970708301a2f3f5d0e1a3ca274d94da038679d1e086a706d041a7306636
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/how-to-get-free-robux-2021-on-ipad-game-hack PDF link annotation
    • https://lib.bunghatta.ac.id/app/repository/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-hacks-and-cheats-for-mac-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-overseer-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-exploit-hack-full-lua-overpowered-commands_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-hack-and-cheats-robux-generator_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-free-logins_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-supreme-roblox-shirt_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-hack-2021-download-free_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/new-free-money-links-coin-master_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
font_00_sfnt_off00002f3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3A 21388 bytes
SHA-256: 0e89ba253a2a0fb213b9ec67faccc408e960775e9927ce7298eacb849ed2122a
font_01_sfnt_off00005d91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D91 19736 bytes
SHA-256: 76e101539ef7ef98e83b53697a81b45bb2c4f385e1fb6e5a0025a9cde92a62e7

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