Malicious PDF — malware analysis report

Static analysis result for SHA-256 3393e45e5aeca9c9…

MALICIOUS

PDF

34.8 KB Created: 2021-06-25 16:28:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1948510c750e75a41d91f906a709bf15 SHA-1: da8c117f8153750c51560064fbb58a5818de7f87 SHA-256: 3393e45e5aeca9c929a9656a08f85a50fa77cdee0eb43be637c00b31f842a0d4
102 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are SEO-optimized and point to pages offering game hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of a download button lure further supports a malicious intent. The primary goal appears to be directing users to external sites that may host malware or facilitate scams.

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/exploring-free-rs-roblox-game-hack
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/bit-ly-coin-master-hack_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/hack-para-coin-master-singapore_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/reddit-coin-master-free-spins_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/free-spins-promo-code-for-coin-master_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/how-to-get-roebucks-in-roblox_GM431946152.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-2021-download_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/get-robux-for-free-2021_GM431946152.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/coin-master-free-spins-facebook_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/get-me-robux-for-free_GM431946152.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/coin-master-level-4_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/mcpe-hack-client_GM479516143.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/coin-master-hack-ios_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/how-to-get-free-snacks-in-coin-master_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/generator-robux_GM431946152.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/are-minecraft-realms-free_GM479516143.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/free-robux-human-verification_GM431946152.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/gamehunters-club-coin-master_GM406889139.pdf
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/como-hackear-juego-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031e5.bin
80a52379ede51fca0b4c37fb16e3636c168a6e97bae842c7061426ce17e125e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31E5 22264 bytes
font_01_sfnt_off00006331.bin
464adbcc20a98ff6ddab9c8a64d3c390c12431de8cc84c182c7411a772f13675		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6331 18948 bytes

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