Malicious PDF — malware analysis report

Static analysis result for SHA-256 979cccb5c599d7d8…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 12:53:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bf78ebaee7a2fcf9bd2169f14aa45686 SHA-1: 963144d94cf6509031b062599c7ffae1a69a1d60 SHA-256: 979cccb5c599d7d8d80166e16d2f02e285d4759824859c15bd67ced6931b279e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs, with a primary focus on luring users to download free game-related content, such as Minecraft hacks or Roblox items. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports a malicious intent to redirect users to potentially harmful sites. The document body explicitly mentions 'how-to-get-minecraft-for-free' and includes a direct link to a suspicious domain.

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/how-to-get-minecraft-for-free-on-computer-game-hack In PDF document text
    • http://digilib.uim.ac.id/repository/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-to-get-a-free-monster-truck-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/roblox-2all-site-hack_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/how-to-hack-a-roblox-profile-youtube_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/i-need-robux_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-on-united-kingdom_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/roblox-free-medieval-hood-of-mystery_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-to-get-free-clothes-on-roblox-without-bc-2021_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_off000031ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31AC 22332 bytes
SHA-256: 69293eed1022c611cc8df47c0cb7c2003abf34e563aebfa56bce15e6265c5043
font_01_sfnt_off00006318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6318 18736 bytes
SHA-256: 17f0bfc7da489febe2cf31a01e732b59c776963868fc2712bfb7438877b5a354

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