Malicious PDF — malware analysis report

Static analysis result for SHA-256 e85841e36a4eb4e7…

MALICIOUS

PDF

33.9 KB Created: 2021-06-18 06:18:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9308cbcfcbab0a4acd1848ddc9733d3a SHA-1: 5720475738c67270169940e53432ae5e64ad19f5 SHA-256: e85841e36a4eb4e7254ca36a862af2d697a4953f2defcd835995bbac264ca56f
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are related to game hacks and cheats for popular games like Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a deceptive practice to drive traffic to potentially malicious sites. The ML classifier also strongly flagged this PDF as malicious.

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/how-to-do-money-hack-roblox-game-hack
    • http://psb.sd-alazhar29.sch.id/repository/roblox-apocalypse-rising-speed-hack-2021_GM431946152.pdf
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-only-1-step_GM431946152.pdf
    • http://psb.sd-alazhar29.sch.id/repository/how-can-i-get-free-coinsn-coin-master_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-facebook-free-spins_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-hack-app-android_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/roblox-hack-account-generator_GM431946152.pdf
    • http://psb.sd-alazhar29.sch.id/repository/roblox-executor-free_GM431946152.pdf
    • http://psb.sd-alazhar29.sch.id/repository/minecraft-windows-10-hacked-client_GM479516143.pdf
    • http://psb.sd-alazhar29.sch.id/repository/toolbox-for-minecraft-ios_GM479516143.pdf
    • http://psb.sd-alazhar29.sch.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdf
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-daily-spins-today_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-hack-online-generator_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/how-to-get-free-bloxburg-in-roblox_GM431946152.pdf
    • http://psb.sd-alazhar29.sch.id/repository/stock-speed-coin-master-free-spins_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/the-coin-master-hack_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/how-do-you-earn-robux-on-roblox_GM431946152.pdf
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-links-to-get-free-spins_GM406889139.pdf
    • http://psb.sd-alazhar29.sch.id/repository/pubg-uc-earning-app-in-pakistan_GM1330123889.pdf
    • http://psb.sd-alazhar29.sch.id/repository/daily-free-spins-coin-master-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f80.bin
241d1f3da515d7687ef879de15007bf9f3845bdff01af266ecf19d12fbc7511b
pdf-font-stream PDF embedded font (sfnt) at offset 0x2F80 21464 bytes
font_01_sfnt_off00005e91.bin
9509816b14985a06ddab2d69fe73b3a7f92fe11917f3035e63a509bb0b9f9531
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E91 19364 bytes