Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2d49e91e9227567…

MALICIOUS

PDF

36.2 KB Created: 2021-06-27 12:11:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c1fddb695b7dfc19b2bab71cb3b57829 SHA-1: c29adc23a8e00faef1bf80a1c7609bca6a215c29 SHA-256: a2d49e91e9227567a61d6235d7c4121a0908f4e9baee3d81e93b4a2ce760f8d6
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/can-u-get-free-robux-game-hack PDF link annotation
    • http://perpus.masda.ac.id//repository/spinuri-gratis-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/www-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-become-a-roblox-admin-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-old-roblox-accunts_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-com-r_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hack-para-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/code-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off0000350a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x350A 23260 bytes
SHA-256: f3b34ae406a55cc270cddfa89f2b4f0a19647d6372edccc9cf408c6839fd2c9a
font_01_sfnt_off00006938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6938 18820 bytes
SHA-256: 52be6a65770a01cbb173e94763e18c68b2166cf4419204c0ca48f3c63de48c00

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