Malicious PDF — malware analysis report

Static analysis result for SHA-256 94a93a1858d2092a…

MALICIOUS

PDF

47.0 KB Created: 2021-06-03 11:13:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 414de6ae652e5265a7826ab30b7230ae SHA-1: eb44417fb50fcb3a0a922d0298e5955e3e33f273 SHA-256: 94a93a1858d2092a562995cc7cae503e2ff1641be34e5ef3addf2457655ee2db
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many of which are disguised as PDF files related to game hacks and free in-game currency. The primary URL leads to a page offering 'free Robux with no verification,' a common lure for phishing or malware distribution. The document body, though heavily obfuscated, contains references to game hacks and the primary malicious URL, reinforcing the phishing and potential malware download attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.online/app/431946152/free-robux-with-no-verification-2021-game-hack
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/hacking-apps-for-roblox_GM431946152.pdf
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-free-coins-and-spins-app_GM406889139.pdf
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-to-get-robux_GM431946152.pdf
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-pc-game-free-download_GM406889139.pdf
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdf
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdf
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/cute-free-stuff-on-roblox_GM431946152.pdf
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-robux-for-free_GM431946152.pdf
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/todays-free-spin-and-coin-links_GM406889139.pdf
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/how-to-get-free-followers-on-tiktok_GM835599320.pdf
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-draw-roblox_GM431946152.pdf
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/roblox-hack-me-robux_GM431946152.pdf
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/pokemon-go-free-money_GM1094591345.pdf
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/can-you-make-a-minecraft-server-for-free_GM479516143.pdf
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-free-daily-spins-2021_GM406889139.pdf
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-link-app_GM406889139.pdf
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/ways-to-get-free-robux-2021_GM431946152.pdf
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-spin-link-for-coin-master_GM406889139.pdf
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-on-computer_GM431946152.pdf
    • https://www.polresbadung.id/new/public/ckfinder/userfiles/files/legit-coin-master-hack-no-human-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_off000050d3.bin
a1fe66172c6241e9beb8a5d3c51f7e4cb1107c804048824fe679d5b7657b46d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50D3 28832 bytes
font_01_sfnt_off00009224.bin
aac922b8691acc9aa277dffee065f580c863b50a75d1a5b8a64d6db85e21622d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9224 19368 bytes

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