Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb7cd47207eab9ae…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 04:44:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 12518f5c29806a21c8fa9872c4765df9 SHA-1: 9662093d4cb2358b70c21189e73faabec53376b2 SHA-256: eb7cd47207eab9aed34e4d1c6ecec6ca6dfbc80cde4c25bdcafb748a9a270f8b
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to websites offering game hacks and cheats, indicating a lure-based attack pattern. The heuristic firings confirm this, identifying it as a 'free generator / game hack' redirector and a 'link farm'. While no scripts were explicitly extracted, the nature of the links suggests the PDF is designed to redirect users to malicious sites, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.tw/app/406889139/freegames911com-coinmastertipsandcheats2021freecoinsandspins-game-hack PDF link annotation
    • http://lib.icbc-indonesia.org/repository/how-to-hack-a-profile-cookie-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-speed-hack-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/can-you-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/cheating-on-roblox-gf_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-hack-roblox-top-model-2021_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-1-million-robux-cheat_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-home_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-hacker-cods-fr-redline_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/2021-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-robux-generator-survey_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_off00003047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3047 22728 bytes
SHA-256: fdd55f0b2ceeda3bfcabd56ff62a91bbeadf9ba06849d7a410ef5b265f39fcb6
font_01_sfnt_off00006345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6345 19340 bytes
SHA-256: 336cd4fe356f1d557bb7c81c630fbec16c59259e54990c4d97f24f313c3c71ee

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