Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df20277dc7d488f…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 20:44:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: da6d6853d5f7bb3f1f95a14dcdbaa5c2 SHA-1: 461e655447b8f9e689f7ad38629266ca62b5e945 SHA-256: 6df20277dc7d488fdc8001167e81d459e6a2c6d53fc86854bd79981a8e3aa9a2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators' for popular games. The primary redirector URL is http://netcdn.tw/app/406889139/www-coin-master-hack-xyz-game-hack, which is flagged as malicious. The document body and embedded URLs suggest a lure for users seeking cheats or in-game currency, likely leading to further malicious downloads or phishing attempts.

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/406889139/www-coin-master-hack-xyz-game-hack In PDF document text
    • http://pustaka-smpn3tpi.com/repository/2021-free-migrated-acounts-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/wurst-112-2_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/command-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-denisdaily-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-how-to-create-a-group-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-spons-apk-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/eggs-free-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/hack-of-roblox-2021-in-game-like-counter-boxing_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-btools-hack_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-free-roblox-generations_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-piano-hack-on-roblox_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_off0000302a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x302A 22220 bytes
SHA-256: e31e4609d08c9d4ce08802a035e3a282d5731c7dc6415251871e2efdd71e2422
font_01_sfnt_off00006166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6166 18856 bytes
SHA-256: 2dd980c1404d819d66b642276e6e99250224d656c5ab39802198873ce914a4ba

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