Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a8d282687f51c6a…

MALICIOUS

PDF

34.8 KB Created: 2021-06-26 14:18:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9a5fc52892c52332fb3b214dc65cc152 SHA-1: b09768cad93925c00efa27a8f93e09d840cb3f35 SHA-256: 5a8d282687f51c6a61cdde831cf501b4dedcf62a0184d77a4e7dcf097c66f0bb
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 structured as SEO-optimized PDF links. The document body explicitly mentions 'how to get free accounts with Robux' and includes links to sites offering hacks for games like Roblox and Coin Master. This indicates a phishing or scam attempt designed to lure users to download potentially malicious content or visit fraudulent sites.

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-get-free-accounts-with-robux-game-hack
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/hacks-for-coin-master-game_GM406889139.pdf
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-robux-generator-no-verification-2021_GM431946152.pdf
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/new-hack-for-roblox-2021-november_GM431946152.pdf
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-robux-for-kids_GM431946152.pdf
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/what-tiktok-free-views-hack_GM835599320.pdf
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/how-to-legit-hack-into-somebodies-roblox-account_GM431946152.pdf
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/coin-master-spin-link-today-free_GM406889139.pdf
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-spins-and-coins-for-coin-master_GM406889139.pdf
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/how-to-hack-roblox-robux-with-inspect-element_GM431946152.pdf
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/coin-master-free-spins-cheat-deutsch_GM406889139.pdf
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdf
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/how-to-get-free-robux-on-phone-2021_GM431946152.pdf
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/hack-launcher-roblox_GM431946152.pdf
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/coin-master-hack-ios-app_GM406889139.pdf
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-robux-no-scam-on-a-computer_GM431946152.pdf
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/coin-master-free-spins-2021-apk_GM406889139.pdf
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/huskybuscom-free-robux_GM431946152.pdf
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/how-to-get-a-lot-of-robux-for-free-2021_GM431946152.pdf
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/https-rbx-place-rewards_GM431946152.pdf
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/install-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_off000031c8.bin
3faaa9f656562ddffa4aeab741b5a83590713679bc974b4589b920d11a42db87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31C8 21784 bytes
font_01_sfnt_off00006195.bin
49c5787ac1f5618529954d74fb7fe96b183eba296ac58ad38ea2b0ce3487567d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6195 19468 bytes

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