Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1fb36bbe2de7b6b…

MALICIOUS

PDF

32.9 KB Created: 2021-07-03 15:04:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6fd9d640b751c4b063f1c05bc5863aa7 SHA-1: 18da76987e92edcd674b2409b64241518d34846c SHA-256: b1fb36bbe2de7b6b09b63c288220797121b6319d14bf2561b1aa530f66730672
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 0.9824

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/431946152/roblox-adopt-me-free-pets-game-hack PDF link annotation
    • https://library.fdk.ac.id/repository/roblox-jailbreak-hack-money-download_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/get-robux-for-free-on-your-browser_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-only-today-ad_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-pilliow-simiulator-free-pillows_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/oginject-co_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/hacker-net-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/robux-hack-pastebin-fast_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/cheat-on-roblox-ghost_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-without-no-verification_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/get-roebucks-com_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-images_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-money-cheats-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2903 22332 bytes
SHA-256: 32553613c21edce5c02c638b6f44aa7178f55ad8573c80af31445d61863d3002
font_01_sfnt_off00005ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC2 19452 bytes
SHA-256: 1dd96ab775d72901557935e6f5d2545c5806849eea1098932e8b85ef8c941c95

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