Malicious PDF — malware analysis report

Static analysis result for SHA-256 60a86e66a22d8f2f…

MALICIOUS

PDF

35.2 KB Created: 2021-06-20 09:44:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: fc18ee04a98ef32de7978c454b464013 SHA-1: 82e62ab6ee907d680c594690f4452156c19f7d69 SHA-256: 60a86e66a22d8f2fec71224c557887d7e6d9b5429bd6e66d097dd5a4b9a1f173
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a lure related to 'Roblox Free Robux Code 2021' and links to external URLs that promise game hacks or generators. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent. The document likely serves as a phishing or scam lure, directing users to potentially malicious websites for further exploitation.

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/roblox-free-robux-code-2021-game-hack PDF link annotation
    • https://cosmosocean.com.tw/upload/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/gernrate-free-robux_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-robux-no-offewrs_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/roblox-girl_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-robux-kazok-only_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-robux-codes-2021-july_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/youtube-danielxd-free-robux_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/how-to-make-free-robux_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
stream_002_off0000302e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x302E 22796 bytes
SHA-256: 8708a9e212696f3063ddf1bebb0d90069d197c5a7e752e2c5f01e99378c8dbd1
font_01_sfnt_off00006376.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6376 19364 bytes
SHA-256: 178b9c5582d7b5edd396fad32783d551a7a2ee6785292aa17466bfcd6084bd5a

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