Malicious PDF — malware analysis report

Static analysis result for SHA-256 f53e0ab49d30ee1c…

MALICIOUS

PDF

48.2 KB Created: 2021-05-20 00:10:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 66e5a320a05c7db49783f0423dcce7c1 SHA-1: aadc53b801083d0f7975949b618d008022e5071e SHA-256: f53e0ab49d30ee1c0bce8bdfe87d241f9dffb552af1f096620431ea7ce0de198
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure impersonating Facebook to trick users into clicking a link related to hacking Coin Master. The embedded URL and numerous other URLs hosted on similar domains suggest a phishing or malware distribution campaign. Although no scripts were explicitly extracted, the ML classifier and brand impersonation heuristics strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

Heuristics 4

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/406889139/como-hackear-juego-coin-master-game-hack.
  • 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/406889139/como-hackear-juego-coin-master-game-hack PDF link annotation
    • https://luminouswisdom.org/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://luminouswisdom.org/images/pubg-uc-iraq_GM1330123889.pdfIn PDF document text
    • https://luminouswisdom.org/images/coin-master-invite-friends-free-spins_GM406889139.pdfIn PDF document text
    • https://luminouswisdom.org/images/earn-robux-sites_GM431946152.pdfIn PDF document text
    • https://luminouswisdom.org/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://luminouswisdom.org/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://luminouswisdom.org/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://luminouswisdom.org/images/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://luminouswisdom.org/images/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • https://luminouswisdom.org/images/coin-master-fan-page_GM406889139.pdfIn PDF document text
    • https://luminouswisdom.org/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://luminouswisdom.org/images/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • https://luminouswisdom.org/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://luminouswisdom.org/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://luminouswisdom.org/images/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://luminouswisdom.org/images/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://luminouswisdom.org/images/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • https://luminouswisdom.org/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://luminouswisdom.org/images/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • https://luminouswisdom.org/images/game-hack-coin-master_GM406889139.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_003_off00004c30.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C30 25772 bytes
SHA-256: 4e460539f6af40729b3a209665bf7cb4d7d80ed124de8d3f690a05f82159bec7
font_01_sfnt_off00008733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8733 7332 bytes
SHA-256: d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d
font_02_sfnt_off0000994b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x994B 18572 bytes
SHA-256: 08bd6afb78e7ba164a11b6bcff14b084761992f6b80076210b252904e123869d

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