Malicious PDF — malware analysis report

Static analysis result for SHA-256 d71facc1d1b10ee7…

MALICIOUS

PDF

35.5 KB Created: 2021-07-08 20:38:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 09dd7f168d66cb56e1964ca9cb7c18e9 SHA-1: fb7463ee2be84d342f29b0227d58870e64b5ecc0 SHA-256: d71facc1d1b10ee75d409da021ca3459fb5cf8b558be9f9f456558c411047876
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links and a primary external URI, all pointing to websites offering game hacks and free in-game currency. This suggests a social engineering tactic to lure users to potentially malicious download sites. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/coin-master-free-spins-hack-download-game-hack
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/free-roblox-items-codes_GM431946152.pdf
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/coin-master-free-attack_GM406889139.pdf
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdf
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdf
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/free-robux-that-actually-works-2021_GM431946152.pdf
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/how-to-hack-robux-in-roblox-2021_GM431946152.pdf
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/top-10-roblox-hacks-rolbox-fandom_GM431946152.pdf
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/roblox-free-robux-no-verification_GM431946152.pdf
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/get-robux-for-free-2021_GM431946152.pdf
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-pastebin_GM431946152.pdf
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-2021_GM406889139.pdf
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/coin-master-hack-apk_GM406889139.pdf
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-2021_GM431946152.pdf
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/guest-pants-roblox-free_GM431946152.pdf
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/free-vpn-for-minecraft_GM479516143.pdf
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/cheats-for-roblox-murder-mystery-2_GM431946152.pdf
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/free-robux-hack-2021_GM431946152.pdf
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/hacks-for-roblox-trackid-sp006_GM431946152.pdf
    • https://elearningmts.mapersis31banjaran.sch.id/__statics/gudangsoal/files/free-premium-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000327a.bin
17ced6af8d48a02b39b8a836c94f8f1bd071e52d264d85cb9e332d5e8b52e3ed		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x327A 22964 bytes
font_01_sfnt_off0000661c.bin
b115cb4344aa47f0303d2ed9022e82a2adfaa93bb3eed7c5085ede476eb5356d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x661C 18924 bytes

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