Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a799e537a64a751…

MALICIOUS

PDF

47.7 KB Created: 2021-05-14 12:20:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 852e75ed6b135b40c74737069142ebff SHA-1: aa6c187300ddf7f9b2a7c6b8cabbdfc1482e7d21 SHA-256: 9a799e537a64a751779c959e62c0246143479abe68e577ee9759bae297bb7192
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting "game hacks" and "free spins". The document body, though partially corrupted, also contains similar URLs. This indicates a social engineering lure designed to trick users into visiting potentially harmful sites, likely to download further malware or engage in scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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-card-link-free-game-hack In PDF document text
    • http://mou16-murmansk.ru/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/wurst_GM479516143.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/how-to-use-wurst_GM479516143.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-spins-coin-master-links-thursday-november-28-2021_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-roblox-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/roblox-sexually_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ada.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ADA 30036 bytes
SHA-256: 11b5cf410df4b9e34f5c5ad5e51ffd0466e0867f51a41f92cf019d88daf68a2c
font_01_sfnt_off00008cdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CDF 3380 bytes
SHA-256: 1dd933c112880b232546f3aab6a17784a8f412d39fd551cc6eb31c5a04c3ce57
font_02_sfnt_off000098c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98C7 18056 bytes
SHA-256: 2c915f38770e083062bc98f9a3714c418532e4445745be163775e18eb12194f3

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