Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bf549e37d70ef03…

MALICIOUS

PDF

34.7 KB Created: 2021-06-26 02:49:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3dcfe1ce1e94f76ec505d8cab1be93a5 SHA-1: 9a39a1452ebe4ffb469f7d22569828846fc77d0b SHA-256: 6bf549e37d70ef03b9487a2b4935a288e0f029e1d594d03d2cebd3cdc9ed649d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free generators, directing users to a malicious URL. The ML classifier strongly indicates maliciousness, and the presence of external URIs and a visual download button lure further support this. No scripts were extracted, but the document's structure and embedded URLs suggest it is designed to redirect 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-what-to-do-if-you-get-hacked-game-hack PDF link annotation
    • https://c2o-library.net/catalog/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-hack-today_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-hair-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/basic-roblox-lua-programming-pdf-free_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-free-10-000-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-can-you-hack-roblox-tattletail_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/todos-los-hacks-de-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/new-free-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-free-roblox-money-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-shotgun-lua-hack-command_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_off00002fe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE0 22080 bytes
SHA-256: 3881d5c61e96372982ad54dd69669cee017186d1b4da70767480e1167d794837
font_01_sfnt_off0000607c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607C 19768 bytes
SHA-256: a9a9734b9df28dc3b9920611272a51fed626f65539ee4cb3e6d7752302fc2c5b

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