Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d76f90517e4a025…

MALICIOUS

PDF

51.3 KB Created: 2021-05-18 04:12:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 98cd689d52e3e737a0d8a5df750ee424 SHA-1: 1d5f1bfc458bf93dc9c71ce9827843d75eb7a54c SHA-256: 5d76f90517e4a025dc8bd698c0bcd4b22846a080d1d3633da7876f4cb61843ca
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically advertising a 'game hack generator'. The heuristic firings confirm these links point to known malicious redirectors and a lure for game hacks. While no scripts were extracted, the document's structure and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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/rbx-com-game-hack In PDF document text
    • http://zagorjeadventureteam.hr/files/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-free-spins-link-deutsch-ios_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/roblox-source_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/how-to-win-robux_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/roblox-free-robux-no-human-verification_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_off00004d39.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D39 42596 bytes
SHA-256: aabb3fb2785afcb76835ffc0e8f2f757074385afc748a3b09b37f04ad37bf174
font_01_sfnt_off0000a7cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7CD 17972 bytes
SHA-256: dffe5730268319e8d6523eb3a7b4d2737e6b1bc7523d2c18f722e59dff9dcb58

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