Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a37a4cd21b26deb…

MALICIOUS

PDF

35.8 KB Created: 2021-07-06 02:12:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c518b63a901d06326ae24145d18a595b SHA-1: a4ce6bd4b738a3771300fa3d412b51c45eafdf8c SHA-256: 2a37a4cd21b26debeedd35cb386bd0ed7e7fbf271f9a28c8480ea920e54004a4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase, luring users to websites that promise game hacks and free currency. The primary link, http://netcdn.tw/app/431946152/how-to-actually-get-free-robux-game-hack, is associated with a game hack redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or social engineering attack aimed at driving traffic 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.tw/app/431946152/how-to-actually-get-free-robux-game-hack PDF link annotation
    • http://roxe2banh.com/public/upload/files/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/coin-master-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • https://roxe2banh.com/public/upload/files/cheat-pour-phantom-force-roblox_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/free-robux_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/free-robux-today_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/como-hackear-dragon-ball-rage-roblox-2021_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/hack-pokemon-go-free-coins_GM1094591345.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/rare-free-links-to-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
stream_002_off00003173.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3173 23436 bytes
SHA-256: a46bf1d25d562096eb32e0ae53f683ff262375ed1c20242a69203e130f6c56ec
font_01_sfnt_off00006680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6680 19240 bytes
SHA-256: caa3459e2df0c933814d087edfbfcbd5173e9d054867d82a012ee6c61ee7aa1c

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