Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d2600d55e7683f2…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 19:23:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3c4e66c759d7dba4deaf398aac17628a SHA-1: 7008463983d55d48090940c44245734c69b2c9df SHA-256: 0d2600d55e7683f211cc257f4f3e36ee4e0a10f8608884ade61bdb0f07c520c8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and a document body that explicitly lures users with promises of 'free Robux' and game hacks. The primary link, http://netcdn.tw/app/431946152/lazyblocks-com-free-robux-game-hack, is flagged as a redirector to a malicious site. While no scripts were extracted, the PDF structure and embedded URIs strongly suggest a phishing or social engineering attack aimed at driving traffic to potentially malicious content.

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/431946152/lazyblocks-com-free-robux-game-hack PDF link annotation
    • http://library.stiks-tarakanita.ac.id/repository/css-roblox-injector-hack_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/money-and-ranking-hack-roblox-link_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-hack-roblox-dungeon-quest-of-items_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-lvl-1-roblox-exploit_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox-free-net_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/robux-free-me_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-hack-roblox-pet-traininer_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/f-r-e-e-that-spells-free-roblox-id_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_off0000317d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x317D 22156 bytes
SHA-256: 8d26b282675d62ab54f17ddcfcd36e8545a34702696b7f2a7da5d1ac367506bd
font_01_sfnt_off00006295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6295 19480 bytes
SHA-256: d59a65bdecbb5c87bb70f1067a6075a20336de1a5b550eccc1c41dc66eb6c340