Malicious PDF — malware analysis report

Static analysis result for SHA-256 2853eeb16b4e63bf…

MALICIOUS

PDF

34.6 KB Created: 2021-06-29 04:01:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0eb2fc4366082cc6bf898117ef06fd76 SHA-1: 6a7dfb2fa3e6d2e11893a85fad91de715c9c640f SHA-256: 2853eeb16b4e63bfac63441589f4bdf44da9a8de2c8b521a9c4363e4be227175
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that lead to a known malicious redirector, masquerading as a 'free generator' or 'game hack'. The document body and heuristics indicate a lure for game-related cheats, likely to trick users into downloading further malware or visiting malicious sites. No scripts were extracted, but the primary malicious functionality appears to be the redirection to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/hacked-shirt-roblox-game-hack In PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-password-hacker-generator_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-real-free-spins_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/is-tiktok-free_GM835599320.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-shirts-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-roblox-plane-models_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/2021-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-jailbreak-free-radio_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-tiktok-followers-without-human-verification-2021_GM835599320.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/top-10-working-robux-hacks-without-verification_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-dragon-ball-z-final-stand-cheat-engine_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-free-5-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-hack-tool-download_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-promo-codes-october-2021-free-robux_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_off0000306e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306E 22180 bytes
SHA-256: 591532280183da86a8d96b17164ba079038961d56a08b068ee97665b6e6559e7
font_01_sfnt_off00006173.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6173 19220 bytes
SHA-256: 2ed33047ac3bc6ca4046075e6ddb6dd803edb72060fe3976f73c0a39ba257dbb

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