Malicious PDF — malware analysis report

Static analysis result for SHA-256 6117ed24877c4066…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 22:12:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 56f5a941130cc3ef28faf6f6d223befc SHA-1: 07a0deb776ad2432b2d93c4489689fac06bea51b SHA-256: 6117ed24877c4066656d3604b65dd43332787aef56fe40f9d1fcb5fd640032f2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically advertising 'game hacks' and 'generators'. The primary lure URL is http://netcdn.tw/app/479516143/how-long-is-the-minecraft-free-trial-game-hack. This pattern suggests a social engineering attack aimed at tricking users into visiting potentially harmful websites, likely for further malware delivery or credential harvesting.

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-long-is-the-minecraft-free-trial-game-hack In PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/roblox-hack-robux-sin-verificacion_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/roblox-free-robux-games-that-work_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/roblox-free-wings_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/roblox-lumber-tycon-2-menu-no-cheat-engine_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/cipherv3-roblox-exploit-rocky-hacks-and-more_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/coin-master-hack-spins-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/hack-de-roblox-adopt-me_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/minecraft-server-free-trial_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_off00003158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3158 22008 bytes
SHA-256: 0a97dccd066e505d1dceb6e513884425968041bf0ccfc9b5a413906e17a36334
font_01_sfnt_off00006155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6155 18404 bytes
SHA-256: a06c3727584f03e67681882c5fba84b6811554b03e9a9932a6f4547f5427a867

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