Malicious PDF — malware analysis report

Static analysis result for SHA-256 895e0054133c4248…

MALICIOUS

PDF

33.2 KB Created: 2021-07-06 00:11:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2d796fb8167c20817fcc66316447366a SHA-1: 79b6c70b6cf1129564d8ccf0aa14d7981a8b4bf2 SHA-256: 895e0054133c42484b211616504ab229cda2863c7880bb5f03b6e92374cd8938
102 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which are presented as download opportunities for game-related cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of a "download button" lure further supports a malicious intent to redirect users to potentially harmful content. The document's structure suggests it is part of a link farm designed to attract users searching for game exploits.

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/479516143/minecraft-skins-download-free-game-hack
    • https://ciudadata.ec/images/ckfinder/files/how-do-u-hack-roblox_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/free-roblox-6-pack_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/earn-free-robux-for-roblox_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/roblox-promo-codes-free-robux_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/coin-master-hacks-no-verification_GM406889139.pdf
    • https://ciudadata.ec/images/ckfinder/files/how-to-make-my-own-coin-master-cards-hack_GM406889139.pdf
    • https://ciudadata.ec/images/ckfinder/files/how-to-get-free-robux-in-1-minute-2021_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/roblox-insta-arrest-hack-jailbreak-pastesbin_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/daily-free-spins-on-coin-master_GM406889139.pdf
    • https://ciudadata.ec/images/ckfinder/files/roblox-money-hack_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/games-you-can-play-to-get-free-robux_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/free-coin-master-spin-app_GM406889139.pdf
    • https://ciudadata.ec/images/ckfinder/files/is-minecraft-free-on-switch_GM479516143.pdf
    • https://ciudadata.ec/images/ckfinder/files/free-gfx-roblox_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/pokemon-go-free-things_GM1094591345.pdf
    • https://ciudadata.ec/images/ckfinder/files/android-coin-master-hack-2021_GM406889139.pdf
    • https://ciudadata.ec/images/ckfinder/files/easy-robux-generator_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/roblox-free-magma-fiend_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/scary-larry-roblox_GM431946152.pdf
    • https://ciudadata.ec/images/ckfinder/files/how-do-you-get-free-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e29.bin
5d60db9c7152e93a7000f8122387d42b0c141cfb44cf9e7f8b34de9c616fd48a
pdf-font-stream PDF embedded font (sfnt) at offset 0x2E29 21628 bytes
font_01_sfnt_off00005d7f.bin
caac3017402713390db328034182a8378ae11b4318c04c7e478aff4389fa23cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7F 18748 bytes