Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a17674531aab408…

MALICIOUS

PDF

49.0 KB Created: 2021-06-02 19:29:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4147d489521b72783fa9082cab30ce20 SHA-1: 719cefbc82426e43d0099861a87fcff607fbae14 SHA-256: 4a17674531aab408b8d4ba5d1e4a392b4bb5cb6baebf46afab5fddcc583a5b19
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 SEO-optimized slugs pointing to game-related hacks and cheats. The document body and extracted URLs suggest a lure to download potentially malicious software disguised as game enhancements. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.xyz/app/431946152/download-roblox-pc-windows-10-free-game-hack
    • http://szekelymozes.ro/images/coin-master-hack-tool-without-human-verification_GM406889139.pdf
    • http://szekelymozes.ro/images/free-roblox-outfits-2021_GM431946152.pdf
    • http://szekelymozes.ro/images/download-coin-master-apk-hack_GM406889139.pdf
    • http://szekelymozes.ro/images/how-to-get-minecraft-java-for-free_GM479516143.pdf
    • http://szekelymozes.ro/images/how-to-get-free-robux-app_GM431946152.pdf
    • http://szekelymozes.ro/images/how-to-hack-roblox-for-robux_GM431946152.pdf
    • http://szekelymozes.ro/images/coinmaster-spin-ml-free_GM406889139.pdf
    • http://szekelymozes.ro/images/how-to-hack-mcpe-master-coins_GM406889139.pdf
    • http://szekelymozes.ro/images/rbxoffers-earn-free-robux_GM431946152.pdf
    • http://szekelymozes.ro/images/roblox-free-robux-no-human-verification_GM431946152.pdf
    • http://szekelymozes.ro/images/coin-master-free-spins-promo-code_GM406889139.pdf
    • http://szekelymozes.ro/images/minecraft-ps4-code-free_GM479516143.pdf
    • http://szekelymozes.ro/images/coin-master-heaven-free-spins-today_GM406889139.pdf
    • http://szekelymozes.ro/images/coin-master-spins-hack-2021_GM406889139.pdf
    • http://szekelymozes.ro/images/free-robux-no-human-verification-generator_GM431946152.pdf
    • http://szekelymozes.ro/images/minecraft-world-free-download_GM479516143.pdf
    • http://szekelymozes.ro/images/how-many-levels-in-coin-master_GM406889139.pdf
    • http://szekelymozes.ro/images/roblox-catalog-free_GM431946152.pdf
    • http://szekelymozes.ro/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdf
    • http://szekelymozes.ro/images/how-to-get-free-fans-on-tiktok_GM835599320.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052b6.bin
54723e59d6313911a44eea28d37ac769f8a6c173a1750cd9ae5d2e53e2b46b58
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52B6 27024 bytes
font_01_sfnt_off00008f74.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F74 2840 bytes
font_02_sfnt_off00009926.bin
ee1809217b52adb4f2b0727edbb9917094df3730f8bb4fb0975337aef5c81433
pdf-font-stream PDF embedded font (sfnt) at offset 0x9926 19432 bytes