Malicious PDF — malware analysis report

Static analysis result for SHA-256 c45a79cb4aa4064c…

MALICIOUS

PDF

42.7 KB Created: 2021-05-14 05:14:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 130541088ecbc2354fa3f41598f07046 SHA-1: 610ba57febb17442fe8fb3de6260964a4f103ff5 SHA-256: c45a79cb4aa4064c16e166c97b94d0dc9795c5cc363d1a5fb92208f70e239ab2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free spins. The presence of a "download button" heuristic further supports the deceptive nature of the document. While no scripts were explicitly extracted, the embedded URLs are highly suspicious and indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/plug-toolbox-for-minecraft-free-ios-game-hack In PDF document text
    • https://gryps.de/images/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://gryps.de/images/roblox-system_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/minecraft-tower-defense-2-hacked_GM479516143.pdfIn PDF document text
    • https://gryps.de/images/coin-master-app-for-free-spins_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://gryps.de/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/coin-master-free-food_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://gryps.de/images/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • https://gryps.de/images/free-robux-hack-us_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_off00004aaa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AAA 25324 bytes
SHA-256: 683deca3d97eab2688c9a0d4e8685a555ddcb122207042e588d06e1627537d91
font_01_sfnt_off0000836a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x836A 18736 bytes
SHA-256: 9cf7fe8b5647e01d4eb492bc675b0c64d11ed2e32af9da0d2909089a9be9f8b8

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