Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ae428f8fcbff64b…

MALICIOUS

PDF

33.9 KB Created: 2021-06-29 10:11:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 81b816c1723abdfcea3153c9d081dff3 SHA-1: 50d70b658d3489ca33ef42ef00c546cbe5209d2c SHA-256: 5ae428f8fcbff64b35fcccb9949218e184041bfe5e940ff87f3a02c2fdac3358
102 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, many of which are related to game cheats and hacks for popular games like Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and the ML classifier strongly flagged this PDF as malicious. The document body and extracted URLs suggest a lure to download or access potentially unwanted or malicious software.

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.co/app/431946152/free-roblox-character-editor-game-hack
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/quelle-est-ladresse-des-robux-dans-roblox-cheat-engine_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/free-online-generator-for-coin-master_GM406889139.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/how-to-host-a-minecraft-server-for-free_GM479516143.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/free-admin-in-roblox_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/roblox-hacking-website_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/free-spin-coin-master-link-2021_GM406889139.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/roblox-robux-hack-easy-for-lg_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/coin-master-free-spin-and-coin-link-today_GM406889139.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/roblox-hack-gnrateur-robux-gratuit_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/how-to-hack-the-mad-murderer-roblox_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/mad-city-roblox-hack-client_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/how-to-get-free-robux-codes-2021_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/robux_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/how-to-get-free-robux-without-offers_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/free-roblox-outfits-2021_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/coin-master-unlimited-free-spins-link-2021_GM406889139.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/free-roblox-adopt-me-accounts_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/coin-master-hack-no-verification_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030c6.bin
058c144d96a4a0638c2c04d8731856ccf1ef9a136cf28199b9836e45e44b8742
pdf-font-stream PDF embedded font (sfnt) at offset 0x30C6 21196 bytes
font_01_sfnt_off00005eda.bin
00e127240875c32f8a3d422b8d898eaffbe4c2da5f7c03d79d98f641a4d18a41
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDA 19216 bytes