Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e373a7475384b2…

MALICIOUS

PDF

34.1 KB Created: 2021-06-20 05:23:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: e97cbfaddd4c214211b222a1bfd3a412 SHA-1: ef5144fe4c3e8ef8138adeef7dc864fff3f296ce SHA-256: d3e373a7475384b25a83b79773a93fe35df3c5736773f1e21841147bc07b844e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users to websites offering free game currency or hacks. The primary link, http://netcdn.co/app/431946152/how-do-i-get-robux-in-roblox-for-free-game-hack, is associated with known malicious redirector infrastructure. The document body and heuristics indicate a social engineering tactic to trick users into visiting potentially harmful sites, likely for credential harvesting or further malware delivery.

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/how-do-i-get-robux-in-roblox-for-free-game-hack In PDF document text
    • http://lib.stimykpn.ac.id/repository/online-hack-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hack-someone-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-fake-name_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-spin-facebook-link_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-venerator_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/i-need-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-to-village-3-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/www-roblox-com-games-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-support_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_off00002db9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB9 22472 bytes
SHA-256: 66542f30eef3a1bd6f988c901a52a1c1bd1da58423eac8912343934fbaee51e0
font_01_sfnt_off00005fc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC6 19228 bytes
SHA-256: 277b0204a0ff38d97325310e3c58d68844904484aa081736ea0746172eeddc50

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