PDF static analysis report

Static analysis result for SHA-256 a1b4d432df1b6949…

SUSPICIOUS

PDF

35.6 KB Created: 2021-07-07 20:27:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8644edd5ea0caa791eea40c799b36f04 SHA-1: 0200d853611de07cd002078a7db5bca9b7009ebb SHA-256: a1b4d432df1b6949c234f997731afb7084ff478df429e3f8da95bef7dd41cf4c
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains an embedded URI pointing to a suspicious URL, and the ML classifier strongly indicates maliciousness. The document body, though partially obfuscated, contains references to game hacks and free currency, suggesting a lure for users to download a second-stage payload. The presence of embedded URLs and the overall context point towards a phishing or social engineering attack.

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.tw/app/406889139/free-spins-coin-master-2021-game-hack PDF link annotation
    • https://www.wco.org.uk/uploads/files/files/5-roblox-games-that-give-free-robux-working_GM431946152.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/robux-hack-no-survey-no-offer_GM431946152.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/free-robux-exe_GM431946152.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/roblox-booga-booga-mojo-update-hack_GM431946152.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/kachifpro_GM406889139.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/how-to-hack-coin-master-apple_GM406889139.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/free-roblox-card-codes-not-used_GM431946152.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/free-download-robloxcom_GM431946152.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/roblox-admin-hack-no-virus_GM431946152.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/free-robux-hack-that-actually-works_GM431946152.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/free-robux-please_GM431946152.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/discord-servers-that-give-free-robux_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_off000033a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33A7 23080 bytes
SHA-256: 46328d26b17a4240bec9ebdcf31ef35ed49eea3f0912635b6f34f19e08e4afd2
font_01_sfnt_off000067ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67AB 18576 bytes
SHA-256: 461056571ca453647e3c969961301e9f27cf934f5ba6ca99c4dfe7c56792b440