Malicious PDF — malware analysis report

Static analysis result for SHA-256 d10defbd88940dcd…

MALICIOUS

PDF

35.4 KB Created: 2021-06-30 10:56:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f7e3e7ec604eaef839e9d9ad51b096bf SHA-1: 68176a827407b694d7b9841b786435fc5755ede9 SHA-256: d10defbd88940dcd0122c823417efc0b9d60b9763a55a304eba27b0371ac636e
82 Risk Score

Malware Insights

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

The document contains multiple embedded URLs and a call-to-action phrase, strongly suggesting a lure to download a malicious payload. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a 'password-protected archive handoff' heuristic indicates the document may be designed to bypass initial security checks by requiring a password for an associated archive, which likely contains the actual malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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-script-executor-free-dd-game-hack PDF link annotation
    • http://smkn1salatiga.sch.id/library/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/lua-c-script-roblox-hack_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/play-roblox-for-free-unblocked_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/roblox-robux-hack-extension_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/descargar-roblox-apk-hack-monedas-infinitas_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/how-to-hack-clothes-in-roblox_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/roblox-nintendo-switch-free_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/how-to-get-a-free-lamborghini-in-roblox_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/roblox-how-to-get-free-gears_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/coin-master-link_GM406889139.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-2021k-robux-no-password-obby_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/coin-master-tricks-and-hacks_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
font_00_sfnt_off000030b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B8 22776 bytes
SHA-256: da090eea3233742f8bec2fd43600bb119d93cf33de374a823ab039c75c112a90
font_01_sfnt_off000063c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C3 19532 bytes
SHA-256: eb7269633f20823bf34bd752cb620eeaf417d341188568490b6bed649ae6dcd2

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