Malicious PDF — malware analysis report

Static analysis result for SHA-256 80bddd4ca432612e…

MALICIOUS

PDF

33.5 KB Created: 2021-07-05 22:47:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b585f3678eae9730e00858a917de9d81 SHA-1: 53141344e7b6c883fa7dab0b457546b38d440e91 SHA-256: 80bddd4ca432612eaa5fd8ad294876838a12adf04e5b3f4e0c895f7c327f0343
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free currency generators. The heuristic firings confirm these links lead to known malicious redirectors and are part of a lure for game-related cheats. While no scripts were explicitly extracted, the nature of the links and the lure suggest a potential for further malicious activity, such as downloading additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/406889139/coin-master-hack-apk-download-game-hack In PDF document text
    • http://katalog.gemalibrary.net/repository/free-robux-website-safe_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/download-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/real-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/give-me-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-free-robux-easy_GM431946152.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_off00002cc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC0 22372 bytes
SHA-256: 02c6f8043e9057ebd46b7fd724140a5d6d7f3059eb3305e145b679d7490b41f8
font_01_sfnt_off00005e75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E75 18760 bytes
SHA-256: e0717da7bc261f17ea8f419e12a90ec9f2f0bf974bdb9909681cf6939735c129

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