Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3d65ab2aa405a0d…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 09:46:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 6925797f3174e987566c55dec26b8233 SHA-1: e53787402989e88198ae0dee80f3c44ed8a6c3c8 SHA-256: d3d65ab2aa405a0d23fa1164969b23d496a94fcc5dca5e0b3fec50e687a657dc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, masquerading as game hacks and generators. The heuristic firings confirm these links point to known malicious redirectors and lure users with promises of free items. While no scripts were explicitly extracted, the nature of the embedded links and the lure suggest a phishing or scam attempt designed to lead users to potentially harmful sites.

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/free-minecraft-bedrock-game-hack In PDF document text
    • http://lib.stimykpn.ac.id/repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-ice-cream-simolator-mit-fly-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hack-roblox-galaxy-itan_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-do-i-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/want-free-robux-copy-and-paste_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-get-any-item-off-the-catalogue-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-are-people-hacking-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-how-to-hack-in-blob-simulator_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/get-free-robux-400_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/magitan-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/use-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-synapse-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-do-i-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/cheat-teleportation-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-hack-minecraft-pe_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_off000030f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F7 22632 bytes
SHA-256: 470ef586977e0908f66a7c10a5c37284e7e1a0b28794fc7f90d909d779aff823
font_01_sfnt_off0000635a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x635A 18560 bytes
SHA-256: 8a1cf310a32837577002de6ae703504663fc8f6c74f3557264522e251e416ebe

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