Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d8f0dcabfddde73…

MALICIOUS

PDF

43.8 KB Created: 2021-05-14 20:40:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2dcd2b629266bbe183dfab2e96e5612f SHA-1: 0f9494b8b76ae44cd39a8605dd4012c862ebc249 SHA-256: 0d8f0dcabfddde732a7d91b97dfefa4e64f85017cbed76f0abf370bcb5c1fab3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and free currency, such as 'roblox-studio-free-download-game-hack'. These links are flagged as malicious redirectors, indicating a likely attempt to lead the user to a malicious site. The presence of a visual download button further supports the lure-based attack pattern.

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 https://netcdn.xyz/app/431946152/roblox-studio-free-download-game-hack In PDF document text
    • http://jkcoaching.nl/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://jkcoaching.nl/images/free-robux-images_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://jkcoaching.nl/images/free-robux-co_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://jkcoaching.nl/images/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://jkcoaching.nl/images/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://jkcoaching.nl/images/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://jkcoaching.nl/images/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • http://jkcoaching.nl/images/free-minecraft-java-server_GM479516143.pdfIn PDF document text
    • http://jkcoaching.nl/images/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://jkcoaching.nl/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://jkcoaching.nl/images/roblox-comcom_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/free-roblox-pin-codes_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://jkcoaching.nl/images/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://jkcoaching.nl/images/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • http://jkcoaching.nl/images/coin-master-daily-free-spins-link-download_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
stream_003_off00004ade.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ADE 25548 bytes
SHA-256: 9abccdfe69bf2ca0e342ae552ea2b4fb6e343a92cd3db080aedc786964c82b01
font_01_sfnt_off00008682.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8682 19048 bytes
SHA-256: 285731f73243192995ef55c7bff5b12d0277a9b461a1d4b1bbd56785699d0c43

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