Malicious PDF — malware analysis report

Static analysis result for SHA-256 f992047ec500f425…

MALICIOUS

PDF

48.6 KB Created: 2021-06-07 14:08:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 25a1668299e4926aa94d02f4c75ef393 SHA-1: cd77245348c540cd0782d2c1b90f5288f699f684 SHA-256: f992047ec500f425848d99c7ea71c6a2cb4dd2e41866c8ad68868cee48f29ab7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for a 'game hack generator' which redirects to known malicious infrastructure. The embedded URL is designed to trick users into downloading further malicious content or visiting a compromised site. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to exploit users through social engineering and redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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.tw/app/431946152/el-mejor-hack-de-roblox-del-mundio-201-game-hack In PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/get-free-coin-master_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-robux-just-for-singing-up_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-pe_GM479516143.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/how-to-get-minecraft-java-edition-for-free_GM479516143.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_004_off00005579.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5579 29256 bytes
SHA-256: 3e980a76b5a312083d6d0efd41926a081c0acd3dc88aaaff90f20655ebaa28e7
font_01_sfnt_off000097ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97CE 19568 bytes
SHA-256: 6c3ec58d0f183db5ced1610ce811de55b266f06ea4c9be9eb77994d65c291feb

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