Malicious PDF — malware analysis report

Static analysis result for SHA-256 458b7a781377cc19…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 16:42:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 922c4da6c9596e8df72877937eaff4cf SHA-1: b4f377109182da9d6e0b8dea31fbca4da6e7a108 SHA-256: 458b7a781377cc19f2f94f8390b614347c5d595fe593e182e578712c3eeb4bd5
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-for-macbook-free-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/minecraft-pe-016-0-apk-download-free_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/youtube-yammy-xox-roblox-hacking_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-how-to-use-osiris-cheats_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-aqua-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-codes-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-home_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/telecharger-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-no-inspect_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hack-destruir-paredes-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-do-you-get-1m-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-apocalypse-rising-speed-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-las-vegas-money-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-hack-almost-any-game-roblox-november-2021-100_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-websites-that-actually-work-2021_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_off00003286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3286 22636 bytes
SHA-256: ad571d67c0a7c7d0441a0107cd860dd1f69a2fcc6017aea0b43183259b1a53d0
font_01_sfnt_off000064fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64FA 18324 bytes
SHA-256: 0f63554c5a6b7bf61911ba90f52c8f6cdd4c0840b663336150c3913e2dc480d2

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