Malicious PDF — malware analysis report

Static analysis result for SHA-256 5946aaf71e19e9e3…

MALICIOUS

PDF

43.9 KB Created: 2021-05-17 03:38:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3f7158764e476e6b3e84e8c1ffe9e3be SHA-1: 8b4938ee518a684daac1ee4a33d27055d2be5530 SHA-256: 5946aaf71e19e9e35f1fb1d2ed99e5f0c579ff74934e3b2a4584cd6e4ca5263d
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links to external websites, many of which appear to be part of a link farm designed to attract users searching for game hacks or cheats. The ML classifier also flagged this PDF as malicious with high confidence. The presence of these links suggests an attempt to redirect users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/is-roblox-free-on-ps4-game-hack
    • http://laboraltoledo.com/images/coin-master-hack-tool-access-online-generator_GM406889139.pdf
    • http://laboraltoledo.com/images/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdf
    • http://laboraltoledo.com/images/coin-master-free-spins-blogspot_GM406889139.pdf
    • http://laboraltoledo.com/images/hack-coin-master-for-free_GM406889139.pdf
    • http://laboraltoledo.com/images/coin-master-hack-apk-android_GM406889139.pdf
    • http://laboraltoledo.com/images/coin-master-free-spins-today-new_GM406889139.pdf
    • http://laboraltoledo.com/images/get-free-food-in-coin-master_GM406889139.pdf
    • http://laboraltoledo.com/images/coin-master-free-spins-hack-without-human-verification_GM406889139.pdf
    • http://laboraltoledo.com/images/apps-to-get-minecraft-for-free_GM479516143.pdf
    • http://laboraltoledo.com/images/wurst-115-2_GM479516143.pdf
    • http://laboraltoledo.com/images/robux-link_GM431946152.pdf
    • http://laboraltoledo.com/images/how-to-hack-roblox-games_GM431946152.pdf
    • http://laboraltoledo.com/images/free-robux-gift-card-codes-2021_GM431946152.pdf
    • http://laboraltoledo.com/images/coin-master-gold-cards-hack-english_GM406889139.pdf
    • http://laboraltoledo.com/images/wurst-18_GM479516143.pdf
    • http://laboraltoledo.com/images/how-to-get-free-roblox_GM431946152.pdf
    • http://laboraltoledo.com/images/how-to-get-free-robux-no-verification-2021_GM431946152.pdf
    • http://laboraltoledo.com/images/free-robux-no-anti-bot-verification_GM431946152.pdf
    • http://laboraltoledo.com/images/how-to-hack-coin-master-using-es-file_GM406889139.pdf
    • http://laboraltoledo.com/images/minecraft-pe-hacks_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004737.bin
d9a297641d4102ee6efe1d8c3a3dfa851a2838d9df43efe935ddc4c021472c34
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4737 25016 bytes
font_01_sfnt_off00007f35.bin
bab8933fc39dc331bc4c1c904a82b1432ab2e02478fa0a59453c98c5c231da8d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F35 2956 bytes
font_02_sfnt_off00008955.bin
8247d090c0055f2d6f0b0151b16707d6dfd23788f3a4692a6f90a5023ea70451
pdf-font-stream PDF embedded font (sfnt) at offset 0x8955 18164 bytes