Malicious PDF — malware analysis report

Static analysis result for SHA-256 d295bc61530af033…

MALICIOUS

PDF

43.4 KB Created: 2021-05-17 03:34:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 20ecd6fa50c425f9551d6c1bb819c62b SHA-1: 51706f6e8b534e4dd4e91e4ccaa1281ebea02e9e SHA-256: d295bc61530af033965dc7cf01162deb2b1200e735e58b3b71004a7c0b43f9ad
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 SEO-optimized and point to other PDF files, suggesting a link farm designed to attract users searching for game hacks or free virtual currency. The primary URL, https://netcdn.xyz/app/431946152/blox-supply-free-robux-game-hack, is presented as a lure for free Robux. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent behind the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/blox-supply-free-robux-game-hack
    • http://pechativmoskve.ru/images/how-to-hack-minecraft-pe_GM479516143.pdf
    • http://pechativmoskve.ru/images/games-on-roblox-that-give-you-free-robux_GM431946152.pdf
    • http://pechativmoskve.ru/images/minecraft-java-edition-free-download-for-android_GM479516143.pdf
    • http://pechativmoskve.ru/images/free-spins-coin-master-2021-glitch_GM406889139.pdf
    • http://pechativmoskve.ru/images/minecraft-hack-ios_GM479516143.pdf
    • http://pechativmoskve.ru/images/hacked-roblox-game_GM431946152.pdf
    • http://pechativmoskve.ru/images/heroes-online-roblox_GM431946152.pdf
    • http://pechativmoskve.ru/images/coin-master-hack-tool-v1-9-download-free_GM406889139.pdf
    • http://pechativmoskve.ru/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdf
    • http://pechativmoskve.ru/images/download-hack-coin-master-apk_GM406889139.pdf
    • http://pechativmoskve.ru/images/how-to-get-free-robux-2021_GM431946152.pdf
    • http://pechativmoskve.ru/images/minecraft-games-to-play-for-free_GM479516143.pdf
    • http://pechativmoskve.ru/images/coin-master-hack-apk-iphone_GM406889139.pdf
    • http://pechativmoskve.ru/images/free-minecraft-capes_GM479516143.pdf
    • http://pechativmoskve.ru/images/give-free-robux_GM431946152.pdf
    • http://pechativmoskve.ru/images/100-free-spins-coin-master_GM406889139.pdf
    • http://pechativmoskve.ru/images/how-to-hack-and-get-free-robux_GM431946152.pdf
    • http://pechativmoskve.ru/images/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdf
    • http://pechativmoskve.ru/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdf
    • http://pechativmoskve.ru/images/coin-master-free-spins-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cd9.bin
341375906449715be41f992994364224dc6b84836be9bbfab462d66e032fcb6d
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CD9 25276 bytes
font_01_sfnt_off000086d8.bin
0902d75613bc39446e97d9d8a05e59c43b59cebedccbae9a4ab3fb6f34b2e91e
pdf-font-stream PDF embedded font (sfnt) at offset 0x86D8 18444 bytes