Malicious PDF — malware analysis report

Static analysis result for SHA-256 d973e9f44685dddc…

MALICIOUS

PDF

33.1 KB Created: 2021-07-06 01:29:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ad0ea7587e8db4a820cd69074ff97862 SHA-1: cd117a14eabbb404a2d481b238ab564f26946e4a SHA-256: d973e9f44685dddc4f6281089e7cf8942fd917699c101dc0c8dd7743db5c1bbf
160 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, including one pointing to 'netcdn.tw/app/479516143/free-minecraft-java-edition-game-hack', which strongly suggests a phishing or malware distribution attempt. The document body and extracted URLs indicate a lure focused on offering free game hacks and cheats to entice users to click the malicious links. The ML classifier also flagged this PDF as malicious with high confidence.

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/free-minecraft-java-edition-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/dantdm-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/getrobux-now_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/nxb-how-to-get-jushin-mode-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/master-free-spin_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-codes-to-roblox-redeem-cards-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-counter-blox-esp-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-codes-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/what-is-the-secret-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-download-roblox-mm2-hacks_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-redvalk-code-roblox-news-scam_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-geht-free-robux-no-human_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/secret-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-retail-tycoon-hack-no-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spin-and-coin_GM406889139.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_off00002fa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA6 21284 bytes
SHA-256: 80e24cc8f92c35b35d6612bb08367bb12be775650d364d75b11fcf315cbf3ff2
font_01_sfnt_off00005de8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE8 18452 bytes
SHA-256: d83f40a0e6f207785081a15a357f7faef04f5cec5f9f625e4715c9d92afd3c55

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