Malicious PDF — malware analysis report

Static analysis result for SHA-256 764ba0dc4e35cbcc…

MALICIOUS

PDF

35.5 KB Created: 2021-06-18 16:45:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fcc1d1c69e5b2a8a3673ee9554088e97 SHA-1: 6e108132fc5a86088390113ac8309c104308bed4 SHA-256: 764ba0dc4e35cbcc8406184e0cdf59d543214e25e5600c2b49570beee15c5ea7
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 0.9980

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-hack-apocalypse-rising-2021-game-hack PDF link annotation
    • http://centr-expert.su/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/roblox-download-windows-7-free_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://centr-expert.su/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/roblox-free-chemis_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/hack-jailbreak-roblox-2021-menu_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/roblox-jailbreak-free-vip-server-1-25_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/pokemon-go-free-kanto-tour_GM1094591345.pdfIn PDF document text
    • http://centr-expert.su/images/how-to-hack-roblox-cash_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/coin-master-hack-no-verification_GM406889139.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_off000031d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D1 22728 bytes
SHA-256: 3b2bdbefaf9746ffc601f200ccbf01c35fdc9737ee75a0573811127b86c03c0b
font_01_sfnt_off00006498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6498 19348 bytes
SHA-256: e7dc3c9bd146c5f951f72cff84f23c5762a6685a538c2da1c9ef33868575e34b

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