Malicious PDF — malware analysis report

Static analysis result for SHA-256 4770c69ab98bee3b…

MALICIOUS

PDF

35.0 KB Created: 2021-06-19 23:11:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b5e155d9b6f2c71688a0a17f791955b6 SHA-1: a9e22a6533d2ffe8b42ff79e60e612e60eb7fde2 SHA-256: 4770c69ab98bee3bf39a7bfdbf57d7d104b8c422b084d5294da3f8d4b6267bc9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that explicitly advertises free game hacks and items for popular games like Roblox and Coin Master. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' confirms that these links lead to redirectors for game hacks. The primary URL, http://netcdn.co/app/431946152/how-to-have-a-coo-roblox-avatar-for-free-game-hack, is directly associated with this lure. While no scripts were explicitly extracted, the nature of the lures and embedded URLs strongly suggests a phishing or scam campaign designed to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-have-a-coo-roblox-avatar-for-free-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-studio-mac-download-free_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-get-coordinates-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/wie-bekommt-man-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/pastebin-hack-robux-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-questions_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/obc-hack-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-links-for-today_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_off00002f37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F37 23124 bytes
SHA-256: 5d2946ac7641582a25137ea15444d5d956f9653c00062b069121656f625e2dc5
font_01_sfnt_off000063a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A9 19032 bytes
SHA-256: 2e44ec4cec6d790f2757611a51d5de0abb4956b8d17e71630725909f1b6e57b1

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