Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc25dfd92541c365…

MALICIOUS

PDF

33.7 KB Created: 2021-07-06 08:33:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d4854befdea9487b8ec83df262dd068b SHA-1: 1ba2a438066ef4b0d44b7d341b4d76164519a3b1 SHA-256: fc25dfd92541c365c1c7a39268b391b247ad94080890540a9ed7a0935df88c75
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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/406889139/card-hack-for-coin-master-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/robux-money-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hack-codes-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-download-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-hack-dragon-ball-rage_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/pubg-uc-india_GM1330123889.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/rbx-earn_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/laxify-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/win-robux-for-free_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_off00002fc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC4 22244 bytes
SHA-256: 518d63fb1bf45b7d25fa453e839bad0e565cfbd946f61548963f1bfd95765f83
font_01_sfnt_off0000610a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610A 18340 bytes
SHA-256: 7e1b9b7afe785ea56b208f87ef5cc21a9c6d298372275f75dfcc7ab1e7e9a91c

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