Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d1aa9cf1814fa0d…

MALICIOUS

PDF

45.8 KB Created: 2021-06-10 23:43:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e2bf536292dce68d1e84fac15e8ba761 SHA-1: 90ef2bb94289f85a45a1f2a153a83c61d62f8054 SHA-256: 4d1aa9cf1814fa0d55ad411397e3253a8fa75c73fc18157bf3c27ac5d037ae86
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs and a document body that explicitly advertises 'hacks' and 'free items' for games, aiming to trick users into downloading further malicious content. The ML classifier strongly indicated maliciousness, and the presence of multiple external URIs, including one pointing to a raw IP address, supports a phishing or malware distribution attempt. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 https://netcdn.tw/app/431946152/hack-cuenta-roblox-2021-pastebin-game-hack
    • http://103.68.2.77/__statics/gudangsoal/files/best-minecraft-hacked-client_GM479516143.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-minecraft-skins_GM479516143.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-free-robux-without-surveys_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/pokemon-go-free-download-play-store_GM1094591345.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-com-roblox_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-generator-no-survey_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-2021000-robux-for-free-in-roblox_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/coin-master-free-daily-spins-and-coins_GM406889139.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/get-more-robux_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/vip-roblox-free_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-codes-generator-no-verification_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/coin-master-free-spins-daily_GM406889139.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/minecraft-free-download-linux_GM479516143.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/troll-hacks-roblox_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-free-robux-generator_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/coin-master-free-cards-link_GM406889139.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-hack-people-in-roblox_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/groups-that-give-you-free-robux-on-roblox_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/minecraft-story-mode-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000518c.bin
09965c0d55f169892424f7f36148c8e3cd8622cbbaab58b0571b17c5a922b084
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x518C 25876 bytes
font_01_sfnt_off00008dba.bin
e1a5e01eae1007b7ae735c1167426a0f080232cb86b3a44bf3b66b8c3c81bfc4
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DBA 19100 bytes