Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fce2cdd268f5aac…

MALICIOUS

PDF

44.1 KB Created: 2021-05-10 21:06:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e07767b5992d1a894af99c2c70448765 SHA-1: 000f3e3e0d8edb215da23303c605c0ee2972a272 SHA-256: 3fce2cdd268f5aac787111ae9f342619dfae793c849727f189d06b528313bb04
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are SEO-themed and point to game-related hacks or cheats. The primary URL, https://netcdn.xyz/app/431946152/rbxcity-free-robux-game-hack, suggests a lure for free game currency. The presence of a "download button" heuristic further supports the idea that the document is designed to trick users into downloading malicious content or visiting phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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/rbxcity-free-robux-game-hack PDF link annotation
    • http://akvamaster.com.ua/images/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://akvamaster.com.ua/images/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/grabpoints-robux_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • http://akvamaster.com.ua/images/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/free-robux-real_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c84.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C84 27272 bytes
SHA-256: 80fc813959688cd34e12de601ea3cfeffd66535a5a3aa16935d7b8ef4e086a72
font_01_sfnt_off000089e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89E3 18420 bytes
SHA-256: f6fda3bfe323f9f0676c079c6b9141a3a072b0621584b37e36c0c9937e592518

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