Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeeb478c835ba375…

MALICIOUS

PDF

32.2 KB Created: 2021-07-22 05:33:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 89346e08f2a44ec395a9c5f45a1e2a3c SHA-1: 615b71af928d0aaf00f1db1f9ee34e05522d1dac SHA-256: eeeb478c835ba375d400755061b56e1be5d5f1383d99b1a8106436d66e5b623a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector domains, including one explicitly identified as malicious and associated with 'game hacks'. The document body also contains a call to action for a 'ROBUX GENERATOR', further indicating a phishing or scam attempt. The embedded URLs suggest the document is designed to lead the user to download or interact with malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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 http://netcdn.tw/app/431946152/how-do-you-hack-roblox-game-hack In PDF document text
    • https://osk-sibir.ru/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://osk-sibir.ru/images/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • https://osk-sibir.ru/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://osk-sibir.ru/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://osk-sibir.ru/images/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://osk-sibir.ru/images/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • https://osk-sibir.ru/images/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • https://osk-sibir.ru/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://osk-sibir.ru/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://osk-sibir.ru/images/free-tiktok-followers-without-verification_GM835599320.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
font_00_sfnt_off000028c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28C6 21844 bytes
SHA-256: 863a645707d14950d9ea3ceeb96e9914cf38e110fce442e18246fb3422b91388
font_01_sfnt_off0000593d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x593D 19000 bytes
SHA-256: 4b71adf96b398875430a9907a488e359cbeb672bde5d827a1821c0316b66e933

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