Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fa6647cf289675a…

MALICIOUS

PDF

36.0 KB Created: 2021-07-07 04:44:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 02cea23dbcb9729f9c6d0c948c8ceaa6 SHA-1: e2c9a7f17e217b27a9dd9144eb42616fbad2fde2 SHA-256: 0fa6647cf289675a842dc9ed7b800780325d7e1b84bff33f19eabb1bd0f5a25f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free spins, directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the 'game hack' lure suggest a phishing or social engineering attempt to redirect users to potentially malicious content or downloads.

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/406889139/coin-master-free-spins-link-2021-game-hack PDF link annotation
    • https://cosmosocean.com.tw/upload/files/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-robux-android-robux-hack_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-robux-no-human-verification-2021-or-survey-for-kids_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/hack-roblox-non-infect_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/cruise-ship-tycoon-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/who-did-the-roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/how-to-get-free-robux-items_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/shirt-roblox-2021-free-dowload_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-spin-link_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-axe-in-roblox_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/cache-http-wwwrobuxiancom-freerobuxcodegenerator_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/can-u-get-insta-banned-in-roblox-for-hacking_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/how-to-make-yourself-look-like-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/www-roblox-robux_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/coin-master-hack-online-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000358e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x358E 22792 bytes
SHA-256: 466ac686dfba4e1c91d56a80b2f4ea13091c6685488a2871b713b72a51c8f704
font_01_sfnt_off00006892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6892 18748 bytes
SHA-256: 785b8830476a1dba2603225cf55ebb3d3433825858fb25e5612ad86a59b30773

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