Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3ddea033da1b628…

MALICIOUS

PDF

50.7 KB Created: 2021-06-02 11:01:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 3a35036f54c6232cb0ff8df663c7144c SHA-1: c2c2d8e6a281ec2d3bfe8daf0361ddbff73613dd SHA-256: a3ddea033da1b6282880bd3055376783664d7bdc73a2e979f4eac6fd5ca4ce39
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9779

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 https://netcdn.xyz/app/431946152/free-robux-eith-no-verifications-game-hack PDF link annotation
    • https://ceranique.nl/images/free-robux-real-working_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/roblox-online-free_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/minecraft-items_GM479516143.pdfIn PDF document text
    • https://ceranique.nl/images/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/coin-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://ceranique.nl/images/free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://ceranique.nl/images/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/robux-free-c_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004daf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DAF 28752 bytes
SHA-256: 9619ec8c91b049e6159df6458f121a162fa95392030c73393951c055a0c32d12
font_01_sfnt_off000090ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90AC 7272 bytes
SHA-256: f462303657ce1de10d3e7d5ae1fe17c8584116bd5bc216971166de87266da924
font_02_sfnt_off0000a21d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA21D 18768 bytes
SHA-256: 289e231d9ed6bd838e844df78ad63946c23e54884b2d03f07cbef6a09a9de4fb

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