Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e21795d31131747…

MALICIOUS

PDF

42.0 KB Created: 2021-05-16 03:03:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fe7e692fa87a73570922ecf814e7c95c SHA-1: dbf772e9d71453d89018a22d2049d1f37040cdb9 SHA-256: 5e21795d31131747566e8b0f32773bef28c758fbce8561449f76db12d60ca45a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to known malicious redirectors, disguised as game hack generators. The heuristic firings strongly indicate a lure to trick users into visiting these sites, likely for further malware delivery or phishing. No scripts were extracted, but the document's structure and embedded links are sufficient to infer a malicious intent.

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/406889139/202100-free-spins-coin-master-game-hack In PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/freerobux-co_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/how-to-get-free-spins-for-coin-master_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_off00004a27.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A27 24356 bytes
SHA-256: 38d4ac9fcb4a62fcf47068975dcf82bcfe07bbfb597ace6c17e4a79642bfc420
font_01_sfnt_off0000819d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x819D 18288 bytes
SHA-256: d5a46c40ddaffffdec7b194e78d64597afed9f46b5e12e45e50a00bb771aa4a6

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