Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e4b93c679781350…

MALICIOUS

PDF

45.0 KB Created: 2021-06-10 21:32:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e84225454bdc05422855568229500a2c SHA-1: 692e0159ccefcd4f37e95dd1d22bce81b862533a SHA-256: 3e4b93c67978135005d97052c0f1f9e815844dc3a89426abbdbef9cdc2f9301e
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 0.9865

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 https://netcdn.tw/app/431946152/robux-hack-computer-no-app-download-computer-game-hack PDF link annotation
    • http://internetdeputy.com/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/www-robux-com_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/roblox-hack-get-free-robuxs-no-download_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/roblox-jailbreak-game-for-free_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/coinmaster-fan-page_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/oprewards-robux-free_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/legit-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/ilum-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/free-coins-for-coin-master_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_off00004fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FA9 25060 bytes
SHA-256: e52638ee42dbdaeb8e8e416771f2a518d9ceca2193208bd1c6ebbfc28e1a35e1
font_01_sfnt_off000089c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89C1 19368 bytes
SHA-256: bb71f384057c6ff611f1d41745ea96a6c7ee02d258e7321910b628042eed4bc9

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