Malicious PDF — malware analysis report

Static analysis result for SHA-256 f07fc88af8683c53…

MALICIOUS

PDF

42.0 KB Created: 2021-05-11 09:09:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: eeb374371f4642a4265bb1f583ca94a5 SHA-1: 6aa88e4f6e371e98fc805d8c6cd31c80b0dcee15 SHA-256: f07fc88af8683c53c8fdbb29a606a29968b54a64c728538f26a5a5e50375c137
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically promoting 'game hacks' and 'generators' as a lure. The primary redirector URL is https://netcdn.xyz/app/406889139/coin-master-fan-hack-game-hack. While no scripts were extracted, the presence of malicious links and the ML classifier's high confidence indicate a malicious intent to redirect users to potentially harmful content.

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/406889139/coin-master-fan-hack-game-hack In PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/minecraft-for-free-games_GM479516143.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/free-spins-coin-master-without-completing-offers_GM406889139.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/coin-master-fan_GM406889139.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/free-robux-only-username_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/all-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/download-coin-master-hack-mod-apk_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_off00004abe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ABE 24532 bytes
SHA-256: d2a4429ba9b4e4a3b75e6a76e100f41fa94acc04a95e539bed6760a3fcafd826
font_01_sfnt_off00008336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8336 17880 bytes
SHA-256: 9d1f455011f0aa7862855f259ab9ea2efa3be9ec050c3ec97e4c793879e57b5c

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