PDF static analysis report

Static analysis result for SHA-256 f8b43b0dabd54823…

SUSPICIOUS

PDF

32.8 KB Created: 2021-06-26 12:18:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1a11b000caa47fcd3461f8e7f7d0b049 SHA-1: 1843794ab0f6bf0a56bd317b9ed2bb9dd789f230 SHA-256: f8b43b0dabd5482343700f150fe71ff7bcc8f29b16a484dc38dc315dafe3a432
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent external URI pointing to a site offering free game currency, which is a common lure for malware distribution. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent. The document body text and extracted URLs suggest a social engineering tactic to trick users into downloading a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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/free-codes-to-get-robux-game-hack PDF link annotation
    • https://htdvn.com/public/upload/files/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/all-2021-2021-free-roblox-items_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-hack-roblox-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-pastebin-code_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/100k-robux-free_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-fan_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/doodle-jump-free-roblox_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/roblox-tix-generator_GM431946152.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_off00002cd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD3 21128 bytes
SHA-256: e04400f6aa8696e456f6cbccd1aa37399165e190a31c466d1912df420909c5c3
font_01_sfnt_off00005ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AE0 18996 bytes
SHA-256: dfcbae9cc34f836758c293e1fc83f7aea52ae239f9b6f7c10f230aa9924992a2