Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d64b02532f332aa…

MALICIOUS

PDF

32.8 KB Created: 2021-06-17 16:46:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8caf39f334f2a3b404faaaa2c87af0d1 SHA-1: 22fb0083ec498714ad629941b994fb25f2861cb8 SHA-256: 5d64b02532f332aac9ee686505ac2d460d12b7c0896b8b8d0165568a9475fb49
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are disguised as game hacks and generators for popular games like Roblox and Coin Master. The primary URL, http://netcdn.co/app/431946152/big-booga-dig-roblox-hack-game-hack, is identified as a lure for a game hack. This suggests the document's purpose is to trick users into clicking these links, likely leading to the download of malicious software or redirection to phishing websites. No scripts were extracted from this sample.

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/big-booga-dig-roblox-hack-game-hack PDF link annotation
    • https://c2o-library.net/catalog/repository/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-md5-hack_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/secret-robux-hack-subscribe-to-make-it-works_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/tiktok-for-free_GM835599320.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-meep-city-cheats_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-free-gold_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-avatar-free-items_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/bloxpink-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
font_00_sfnt_off00002cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB3 21512 bytes
SHA-256: e1e47fd1305f4f18ced0bd149b14d85ae6c34175e29e953cc587d1e1432d248b
font_01_sfnt_off00005bf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF6 18756 bytes
SHA-256: ed13d9c18b0a84818fac98241b0c4ffafa839fae9a80606cc8b5d7b7a9572132

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