Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0969b76146b2fc9…

MALICIOUS

PDF

43.5 KB Created: 2021-06-14 00:22:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b3fa48be3baf59800f9b7baa8b232713 SHA-1: d4564d444711b5f88f67a3d59cfcbc673eb1dd2a SHA-256: b0969b76146b2fc9977f5b1e9d15f1765894322b1fa8e042361933548b695c02
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to a known malicious domain, masquerading as a generator for game currency or hacks. The document body and heuristics indicate a lure for free Robux or game cheats, which is a common social engineering tactic. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/robux-free-today-game-hack In PDF document text
    • http://www.compusiteinc.com/images/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • http://www.compusiteinc.com/images/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://www.compusiteinc.com/images/get-free-spins-on-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/como-hackear-cuentas-de-roblox-facil-y-rapido_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/roblox-prizes-free-robux_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-roblux-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-robux-give-away-live_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
stream_003_off00004a59.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A59 26464 bytes
SHA-256: c765b7f53b311c08ac5353b93805c2e9219191fe87bf17bf402aea41685a03b9
font_01_sfnt_off0000868f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x868F 18596 bytes
SHA-256: a11bc90e1b633cef3f18e17942788422730b9dafd3be9d4f381488f7f407eeae

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