Malicious PDF — malware analysis report

Static analysis result for SHA-256 111cbba370b8c074…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 14:10:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c4addddaaa6c54240dff9c2ee0ca9961 SHA-1: d913ab150995396077d1bdc4e6126ca5fe3fa700 SHA-256: 111cbba370b8c0740d5662ecfe31a4ca2c702ed6ccc7ad095b7df99a62cb8a77
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that are identified as malicious redirectors, specifically promoting 'free generator / game hack' lures. The document body also contains the URL http://netcdn.tw/app/479516143/minecraft-free-download-mobile-game-hack, which is associated with these malicious lures. This suggests the document is designed to trick users into visiting a malicious site, likely for further malware delivery or phishing.

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-free-download-mobile-game-hack In PDF document text
    • https://library.institutpendidikan.ac.id/repository/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/instalar-roblox-hackeado-para-android_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-trade-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/robux-best_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/promo-code-hack-2021-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-online-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-admin-panel-twitter_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-roblox-shirt-template-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/online-coin-master-hack-here_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/wwwrobuxhackscom_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_off00003165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3165 22200 bytes
SHA-256: 1f12890386c818c8216460038ad8a14e5bf65f0819a2b4316adbabfe656eb667
font_01_sfnt_off00006295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6295 18736 bytes
SHA-256: b6e051f0b4e02b7356fd7079c0d6036a663a9338c3288034fa352d97dcc0d1e4

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