Malicious PDF — malware analysis report

Static analysis result for SHA-256 584aebba429a6fd9…

MALICIOUS

PDF

47.3 KB Created: 2021-05-17 11:15:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a45fbb0bba10b992769140ee3de530c7 SHA-1: 9e7a86a949aa45cbe3880caa8cd7984c569d27ac SHA-256: 584aebba429a6fd9ab3fb746a8bc83d7c9d9510e7b1a0df566025e1f2cc5e6d6
82 Risk Score

Malware Insights

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

The PDF document impersonates Microsoft to lure users into clicking links that promise game hacks, which is a common credential phishing tactic. The embedded URLs, such as 'https://netcdn.xyz/app/431946152/how-to-use-scripts-in-roblox-hack-game-hack', are designed to lead users to malicious sites. The ML classifier strongly flagged this PDF as malicious, supporting the phishing and potential malware download intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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/431946152/how-to-use-scripts-in-roblox-hack-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/431946152/how-to-use-scripts-in-roblox-hack-game-hack PDF link annotation
    • https://pfpro.de/ckfinder/userfiles/files/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/coin-master-map_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/free-spins-promo-code-for-coin-master_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/coin-master-link_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/coin-master-free-online_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/coin-master-daily-free-spins-blogspot_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
stream_003_off00004b2e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B2E 33068 bytes
SHA-256: 211804a0e214d9a147d7739b7de134692e5c8c38b57ad48bf266067dece9bf0b
font_01_sfnt_off00009508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9508 18932 bytes
SHA-256: fce9e652f89a1af62f774ff2b7937cf54d78de2903c3939778e1916a8682391a

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