Malicious PDF — malware analysis report

Static analysis result for SHA-256 b305c54b59448383…

MALICIOUS

PDF

34.4 KB Created: 2021-07-02 06:07:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 6f4127627488253b142187e3a9f4853b SHA-1: 9134303970e09236a7a47d569f4b43064e694ede SHA-256: b305c54b59448383e89c04eb4f21409c4d62d9c964b2f306c533596796e3043a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are disguised as game hacks or free generators, aiming to trick users into clicking them. The primary link, http://netcdn.co/app/431946152/all-might-roblox-free-shop-t-schirts-game-hack, is identified as a redirector to potentially malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the lure-based attack pattern.

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/all-might-roblox-free-shop-t-schirts-game-hack PDF link annotation
    • http://library.unissula.ac.id/fk/repository/tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/pokemon-go-free-hack_GM1094591345.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/roblox-free-car-games_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/counter-blox-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/wizard-hacks_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/island-royale-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/roblox-2-player-company-tycoon-cheats_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-bee-swarm-simulator-free-diamond-eggs-codes_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-hack-gui_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/unkown-cheat-roblox-exploit_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_off00002e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E9F 22388 bytes
SHA-256: 00541f729dea657000d9e8f2cda314fb485693dd254a7debf1a6a386e5462690
font_01_sfnt_off00006060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6060 19412 bytes
SHA-256: 222c65b3be98746850ac7c1211e0752ef36ec2d2db8a528e70dbaa88671c4b85

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