Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab88a4faa5a015bb…

MALICIOUS

PDF

36.6 KB Created: 2021-06-26 05:10:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: eeb9412a7ff39a88b7b67d2f59d365ce SHA-1: f2fb73d66f49e3d330e16d34c3428ddd78ad3ba7 SHA-256: ab88a4faa5a015bb31d89f99d9aa01615ec104ab8720a6c376b2017c61397291
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically advertising game hacks and free items. The primary lure appears to be related to 'Roblox Lumber Tycoon 2 Hack'. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack aimed at redirecting users to potentially harmful content or further malware downloads.

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.co/app/431946152/roblox-lumber-tycoon-2-hack-deutshc-game-hack In PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-phone-number-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-hack-roblox-for-free-stuff_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-a_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-online-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-source_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/best-roblox-games-with-free-beat-box_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-come_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/build-a-boat-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/get-free-spins-for-coin-master_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_off0000341e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x341E 23048 bytes
SHA-256: 4ccfb4d7c2ee48f2c1e933c5feb4a6727ca979540987c1af6e5a9c69aba184a0
font_01_sfnt_off000067bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67BD 19796 bytes
SHA-256: 8a35245bfe9a3d39b8a435c8b4ea4d63c09b58a25ccf56a1db148ee315832ffc

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