Malicious PDF — malware analysis report

Static analysis result for SHA-256 b382184349d2e6e5…

MALICIOUS

PDF

35.0 KB Created: 2021-06-29 00:07:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8221aa92392d018d955ee5b4cfed4fdb SHA-1: 4003f222f4ed8f040f573a409ab2655c7eef0d8f SHA-256: b382184349d2e6e56118ff9258404085489b258ef27c12b8d7b8f468f548f241
82 Risk Score

Malware Insights

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

The document contains multiple embedded URLs and a prominent external URI pointing to sites offering game cheats and hacks, such as 'roblox-fly-hack-2021-game-hack'. The presence of an MFA lure heuristic suggests the document may also be designed to harvest credentials or session tokens under the guise of account verification. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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-fly-hack-2021-game-hack PDF link annotation
    • https://duoledesign.com/image/data/files/getrobux-come_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/roblox-backpack-free_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/get-free-codes-roblox_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/roblox-font-download-free_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/tiktok-free-use_GM835599320.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/how-to-make-free-shirts-on-roblox-without-bc-2021_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/como-ser-hacker-en-roblox-en-celular_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/does-the-roblox-hack-work_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/cm-spin-link_GM406889139.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/roblox-hack-999999-robux-pc-2021-august_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/roblox-exploit-synapse-x-free_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3063 22472 bytes
SHA-256: 08f4347b50f6811204f12bfac40cfee7bc5e330d85ecc10ad97517851fbf2588
font_01_sfnt_off000062b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B6 19400 bytes
SHA-256: 785b4a60c31933733c82d48b1b8d7c46f223cd70e535ea33f0c7a3fbad35387a

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