Malicious PDF — malware analysis report

Static analysis result for SHA-256 11e3d3fdf46dfaee…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 12:56:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7abbd16c5c3a8401ebd03223f6b283cc SHA-1: 633a59bfc61965eeea230a6880c59a059024b7cd SHA-256: 11e3d3fdf46dfaeeacaac632f9b904ec4a091947dda93df4732cb090a8bd224a
102 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, many of which are part of a link farm designed to attract users searching for game cheats and hacks. The primary URL http://netcdn.tw/app/431946152/easy-roblox-today-game-hack suggests a lure for game-related exploits. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is intended to redirect users to potentially harmful content.

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/431946152/easy-roblox-today-game-hack
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/coin-master-cheats-for-free-spins_GM406889139.pdf
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/link-coin-master_GM406889139.pdf
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master-game_GM406889139.pdf
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/free-robux-viseo-not-clickbait-2021_GM431946152.pdf
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/multiplayer-master-hack-coins_GM406889139.pdf
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins-today_GM406889139.pdf
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/coin-master-hacks-for-spins_GM406889139.pdf
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/roblox-hair-for-free_GM431946152.pdf
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/free-gametestrobloxcom-accounts_GM431946152.pdf
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/comment-avoir-des-robux-gratuitement-sans-etre-hack_GM431946152.pdf
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/free-game-pack-coin-master_GM406889139.pdf
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/collect-robux_GM431946152.pdf
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/bux-life-free-robux_GM431946152.pdf
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/coin-master-free-spins-today-new_GM406889139.pdf
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/free-robux-no-human-verify_GM431946152.pdf
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/how-do-i-get-free-coins-in-coin-master_GM406889139.pdf
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/free-robux-real_GM431946152.pdf
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/ear-free-spins-for-coin-master_GM406889139.pdf
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-2021_GM431946152.pdf
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/hacks-for-sale-in-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003180.bin
0606b227ae7e25962d8752c37b380f263e5c668ff35f2a1d57335e3651ff9ec2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3180 22820 bytes
font_01_sfnt_off00006489.bin
b3bd375acba33e77ee22fe000258108f1e95af5de1f32840daa69e2e54d0cbf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6489 18840 bytes

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