Malicious PDF — malware analysis report

Static analysis result for SHA-256 a387cdb94aee565d…

MALICIOUS

PDF

23.4 KB Created: 2021-07-04 06:35:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 134704ee1be874ce2272bbc69a9be37d SHA-1: be04cbb5307d2bd90aa622ea8db99641dac09cad SHA-256: a387cdb94aee565db00502bae3834e2d0e9da6537db7d9c495cc96fbd3eecd0a
94 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, identified as a link farm, that direct users to websites offering game hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of numerous external URLs suggests a phishing or scam attempt to lure users to potentially harmful sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • 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.
  • 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/479516143/classic-minecraft-net-hacks-game-hack
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/free-robux-live_GM431946152.pdf
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/how-do-i-get-free-robux_GM431946152.pdf
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/2021-hack-roblox_GM431946152.pdf
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/roblox-prison-life-noclip-hack-2021_GM431946152.pdf
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/minecraft-hacked-apk_GM479516143.pdf
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/xray-for-roblox-for-hacks_GM431946152.pdf
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/coin-master-hack-for-ios_GM406889139.pdf
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-pc_GM479516143.pdf
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/how-to-make-items-free-in-roblox_GM431946152.pdf
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/free-robux-today_GM431946152.pdf
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/hack-coin-master-8-ball-pool_GM406889139.pdf
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/roblox-games-free-download-for-android_GM431946152.pdf
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-pc_GM431946152.pdf
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/how-to-hack-on-roblox-mac_GM431946152.pdf
    • https://elearning.min11blitar.sch.id/__statics/gudangsoal/files/unlimited-robux-hack-no-human-verification_GM431946152.pdf
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today_GM406889139.pdf
    • https://elearning.min11blitar.sch.id/__statics/gudangsoal/files/dead-by-roblox-bloodpoints-hack_GM431946152.pdf
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/free-t-shirt-roblox_GM431946152.pdf
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/roblox-comcom_GM431946152.pdf
    • http://elearning.min11blitar.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f80.bin
2cc519ddcdbc1f80e441293ac03f97ff1216eefe1a07612c81122e407eee4240		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F80 21460 bytes

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