Malicious PDF — malware analysis report

Static analysis result for SHA-256 17c6f579529b3de8…

MALICIOUS

PDF

28.7 KB Created: 2021-05-19 14:31:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: baa9bcf778375192f76e8162b74ffc21 SHA-1: 973c6d03ab7432b41b4bfbdd4fb2f26056c63c77 SHA-256: 17c6f579529b3de867fedffdecd9bc7fe48041596a78625dcf6946457727fefe
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, identified as a link farm, likely intended to manipulate search engine results or redirect users to malicious content. The document body and extracted URLs suggest a lure related to free game currency or items, a common tactic for phishing or malware distribution. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 3

  • 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.
  • 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/406889139/how-to-get-free-spins-for-coin-master-game-hack
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/get-free-robux-without-human-verification_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/hacks-para-coin-master_GM406889139.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-2021-robux_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-robux-hacks-no-verification_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-blogspot_GM406889139.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-hack-apk-no-survey_GM406889139.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/blox-fish-free-robux_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-hack-mod-game-download_GM406889139.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-hack-ios-apk_GM406889139.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-invite-friends-hack_GM406889139.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-get-robux-for-free-2021_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/minecraft-dungeons-download-free_GM479516143.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-robux-roblox-promo-codes_GM431946152.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-hack-pc-free_GM406889139.pdf
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/minecraft-java-edition-code-free_GM479516143.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c27.bin
d5bcd7f91d74ae0d315e72c6163ee811438e704ea6fd271713d4c34a05026f85
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C27 15012 bytes