Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0910ac517d3d614…

MALICIOUS

PDF

36.0 KB Created: 2021-06-29 19:44:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b2d260c07668b4861f38557867014bd8 SHA-1: a0439823e69dfc99a0bd6758c26f1564334f54c3 SHA-256: a0910ac517d3d6149549d6f276b899f67aa30219a33d0fbb2466fc86643724fe
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF document contains numerous embedded URLs and a "download button" lure, strongly suggesting a phishing or malware distribution attempt. The ML classifier also flagged this PDF as malicious. The document body and extracted URLs indicate a lure related to free in-game currency and cheats for popular games, likely directing users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-get-free-robux-a-simple-way-game-hack
    • http://library.ft.upnvj.ac.id/repository/get-free-spins-in-coin-master_GM406889139.pdf
    • http://library.ft.upnvj.ac.id/repository/roblox-free-robux-com_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/roblox-cheat-engine-no-viruses_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/roblox-adopt-me-free-pets_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/websites-that-give-free-robux_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/coin-master-spin-link-today-free_GM406889139.pdf
    • http://library.ft.upnvj.ac.id/repository/roblox-free-robux-game-guardian_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/free-roblox-gfx_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/is-there-a-way-to-get-free-robux_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/hack-train-in-roblox-jailbreak_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/minecraft-creative-mode-free_GM479516143.pdf
    • http://library.ft.upnvj.ac.id/repository/free-robux-no-verify-2021_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/html-free-robux-30-pastebin-com_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/minecraft-download-free-download_GM479516143.pdf
    • http://library.ft.upnvj.ac.id/repository/free-printable-minecraft-coloring-pages_GM479516143.pdf
    • http://library.ft.upnvj.ac.id/repository/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/free-robux-by-bananaman_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/free-robux-for-completing-offers_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/roblox-hack-de-robux_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/google-coin-master-free-spins_GM406889139.pdf
    • https://www.roblox.com/.I
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003252.bin
c1377e9ab234296295a4ca01fc1f270112c9e6c62c7038d9c7577f7c5300291a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3252 22604 bytes
font_01_sfnt_off000064cc.bin
b0064063c087ebf7d4026a23b67ea06544b3f56a1022a0519f84b087af1e530f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64CC 19992 bytes

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