Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dba9e4ba65a1cbd…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 15:59:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0699020dbbb647756dbbc713ef618b3f SHA-1: 2c080ad7fa5e6c03f16bd671dd463f15e310bcaf SHA-256: 7dba9e4ba65a1cbd835c330f22140d730230ee949b410eb58ff776cf3f9e1ab2
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which are structured as SEO-optimized links to pages promising free in-game currency or hacks for popular games. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful websites. The document body itself contains keywords and URLs related to 'Roblox Robux' and 'Coin Master', reinforcing the lure.

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/roblox-robux-game-hack
    • http://stiepariperpus.web.id/sarjana/repository/how-to-look-like-a-guest-in-roblox-for-free_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana/repository/tiniest-roblox-avatr-with-free-items_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-free-likes-and-followers-on-tiktok_GM835599320.pdf
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-hack-tool-ios_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana//repository/how-to-hack-roblox-accounts-2021_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana/repository/what-app-do-you-use-to-get-free-robux_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-card-hack-apk_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/free-catalog-things-you-never-knew-existed-roblox_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/how-to-coin-master-spin-hack_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-hack-2021-apk-download_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/free-robux-hack-with-proof_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/rbxoffers-earn-free-robux_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana/repository/www-mobihack-roblox-hack_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/games-that-give-you-free-robux_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-free-rare-cards_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/all-new-free-roblox-accounts-biz_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/static-moonactive-net-rewards_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/roblox-free-items-2021_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/fan-page-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fa1.bin
0dba79b2646b6ee8e8875122a733803eef615aea50870121c7eafe1df7a47ce3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA1 22548 bytes
font_01_sfnt_off000061f6.bin
91fe40ca7b1c63e097b3ed98f551f0053b3fa477182f2dddb1f8374deacdf7be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61F6 18628 bytes

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