Malicious PDF — malware analysis report

Static analysis result for SHA-256 faffcadbd864c613…

MALICIOUS

PDF

36.0 KB Created: 2021-06-29 08:06:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 666b4136053bc019c47ccc3a1d6697b9 SHA-1: 877cb9012f813aa0da421e27ed43b783543c4273 SHA-256: faffcadbd864c613111644a2edae5bea7f02ebeec37f445bb0a5b37d799789ea
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs that redirect to sites offering game hacks and cheats, a common lure for malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically flags this behavior. The ML classifier also strongly indicated maliciousness. The document likely serves as a dropper or redirector to a 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/free-rs-in-roblox-2021-game-hack PDF link annotation
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-avatar-the-last-air-bender-lvevl-hack_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-exploit-free-executor-2021-september_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-robux-hack-that-works_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-to-hack-roblox-jailbreak-money-2021_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/can-i-download-roblox-for-ps3-free_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/hccb-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/codes-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-robux-comlu-com_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-to-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-do-you-get-free-robux-on-laptop_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-robux-free-robux_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/thanos-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-coregui-hack-making_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_off00003648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3648 22224 bytes
SHA-256: db16ab44ea16b74258b1df9077507f29a9d6ee1d298e9fef8bdbd465a8258337
font_01_sfnt_off00006795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6795 19052 bytes
SHA-256: cb5f95999a5f26b9ac6090b2cc0c443f562bccceb866f165ff76c9a24cf6bf37

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