Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb997d3091d77b59…

MALICIOUS

PDF

32.9 KB Created: 2021-07-04 18:03:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fa8e09dbc10c9abc59e80a8ba8767dc3 SHA-1: 967b39a34ec5790188ba2cc76ae566978aca2cf9 SHA-256: eb997d3091d77b59777f799d0cce881b16727813beb8a06948decb31e17ef62e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as free game hacks and generators. The primary lure URL is http://netcdn.tw/app/479516143/minecraft-svg-free-game-hack, which is flagged as a known malicious redirector. The document body and embedded URLs strongly suggest a social engineering tactic to trick users into visiting potentially harmful sites.

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/479516143/minecraft-svg-free-game-hack In PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/hack-roblox-jailbreak-money-2021_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/robux-win_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/free-robux-1-million_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/minecraft-for-free-games_GM479516143.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/play-free-roblox-com_GM431946152.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://biblioteca.ganexa.edu.pa/repository/is-minecraft-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
font_00_sfnt_off00002e4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E4B 22140 bytes
SHA-256: b82d1d1ba78bea80a31138ea44682e560330840db64d2b9732d3e58031dcd616
font_01_sfnt_off00005ebb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBB 17968 bytes
SHA-256: f82c060a5662ddcca675aec0cfac04b32032cde6baf3a8524f802f6fcb7e6d40

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