Malicious PDF — malware analysis report

Static analysis result for SHA-256 94a077d931d8f5d0…

MALICIOUS

PDF

33.5 KB Created: 2021-07-02 08:41:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 84434056cf72be7522f17c8efff62760 SHA-1: 49b1082fbf1da2d3a42b17e7ac870fa99e6ff4c4 SHA-256: 94a077d931d8f5d0a0ea4d310cd5d94bf4b1fadb7d31990f80f43666ed34e00f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/free-roblox-clothes-2021-game-hack PDF link annotation
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/roblox-cheat-engine-hacks-october-2021_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/real-free-robux-obby_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/impact-roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/comment-avoir-un-cheat-sur-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/roblox-nintendo-switch-free_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/how-to-open-cheat-engine-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/claim-free-robux-game_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/roblox-prop-boat-free_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/change-roblox-username-free-2021_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/free-robux-scam-site_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/free-robux-codes-2021-mai_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/roblox-money-cheats-2021_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/free-roblox-account-website_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/comment-hacke-roblox-robux_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/one-piece-final-chapter-youtube-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/robux-hack-download-2021_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/how-to-make-a-vip-server-free-no-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/roblox-games-that-you-can-play-online-for-free_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/how-to-get-the-diamond-block-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/robux-codes-unused-free-robux_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_off00002c1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1C 22104 bytes
SHA-256: b19f7ca44d4247a741b27ad7ab11d0ac70c0cd770317f4b4bbef0c9bafffa781
font_01_sfnt_off00005d1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1D 19320 bytes
SHA-256: 86f15129a455bdcbd3c870b88480cf29a3086770cb270fee66b8f95c7ade4570

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