Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7f20cbfe0da386f…

MALICIOUS

PDF

33.4 KB Created: 2021-06-19 13:39:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: cb7ce9077e0490ee8e16ce2be82e2265 SHA-1: 80ee57150b74e795811f153b6ea98b29e5a0c8ae SHA-256: c7f20cbfe0da386f49c85850f9edf08762e52383e562c748fd683feb3d5f6e48
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and generators, directing users to the URL http://netcdn.co/app/431946152/spinning-hack-roblox-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to lead the user to a malicious download or exploit site. The ML classifier strongly supports the malicious verdict.

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/spinning-hack-roblox-game-hack PDF link annotation
    • http://library.fk.upnvj.ac.id/repository/free-face-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-t-shirt-adidas-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/admin-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/games-like-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-restaurant-tycoon-diamond-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/blox-fun-info_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/install-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/robux-hack-download-ios_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/win-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/apocalypse-rising-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-download-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/cheat-roblox-lumber-tyccon-fly_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.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_off00002dff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DFF 21640 bytes
SHA-256: 44422b0ce84944bb5cdb3f553b490d8ccc90ff32e52b88f63b301ad6ffafc06b
font_01_sfnt_off00005d81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D81 18952 bytes
SHA-256: 5eaff982f960663272a426bee9dcf9225ed11aa600364aa3bf2cc7fe1246faad

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