Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a3d684dd874972a…

MALICIOUS

PDF

35.0 KB Created: 2021-06-30 11:09:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f1835fdb4c3501ea227cf78ea06ea874 SHA-1: 376eb349a7f8059ca9841a9a562c7a14bc3de3e1 SHA-256: 9a3d684dd874972a7c2893ba7c6d9c70b0920ddbb1a095512f75ec62ecae3f2d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs and heuristics indicate it is a lure for game hacks, specifically mentioning Roblox and Coin Master. The primary URL, http://netcdn.co/app/431946152/roblox-66-hack-game-hack, is directly linked to the 'game hack' lure. This suggests the document is designed to trick users into clicking the link to download a potentially malicious payload.

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/roblox-66-hack-game-hack PDF link annotation
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/in-roblox-field-of-battle-how-do-you-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/app-hack-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hack-on-roblox-to-not-die-in-obby_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/test-for-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-admin-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/robux-hack-inspeccionar_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-xbox-gameachivements-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-for-ios_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-flood-escape-2-cheats_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-groups-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/como-hackear-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-generator-2021-no-survey_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_off00003185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3185 22668 bytes
SHA-256: 973dd7422bc537bf1ae71160ae0b5ed1e0af690d66e1ab99f8e48aea58f033a9
font_01_sfnt_off00006459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6459 18824 bytes
SHA-256: c66c2eee350189049a90cb641292d917361a7e9e147e266c8701292f90daa504

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