Malicious PDF — malware analysis report

Static analysis result for SHA-256 d326e4eda68c3e9d…

MALICIOUS

PDF

47.9 KB Created: 2021-06-03 09:11:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 77000b1e5c1799d50679f164af592519 SHA-1: 3a1d724753892596e6bd6496133c3544052e3c81 SHA-256: d326e4eda68c3e9db46757547ff5d6d90815098b6e1593ec5c752616112c7c30
142 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs and a 'link farm' structure, suggesting a social engineering attempt to direct users to external sites for game hacks. The 'SE_CLICKFIX' heuristic indicates the document may instruct users to execute commands, further supporting a malicious intent to trick users into downloading or running further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 5

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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.online/app/479516143/minecraft-java-hacks-game-hack
    • http://libsmpn1balongpo.sch.id//repository/free-coin-master-hack-no-verification_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-spins-coin-master-hack-2021_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-do-i-get-minecraft-for-free_GM479516143.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-robux_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/claim-free-spins-coin-master_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-hack-in-roblox-prison-life_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-robux-instantly_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-hack-download_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-a-lot-of-robux_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-spins-coin-master-2021_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/get-me-robux_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/minecraft-bedrock-hacks_GM479516143.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-robux-on-chromebook_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/minecraft-hack-client-18-9_GM479516143.pdf
    • http://libsmpn1balongpo.sch.id//repository/static-moonactive-net-rewards-2021_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-shield-link_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-actually-get-free-robux_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-links-coin-master_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-minecraft-skins_GM479516143.pdf
    • http://libsmpn1balongpo.sch.id/repository/free-roblox-accounts-pastebin-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000055b4.bin
5b17f882d8e5a14e8f1df8b4e5b9fbf66c5e9f30f0deb4a9378195c41f1c322c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x55B4 25880 bytes
font_01_sfnt_off00008fa7.bin
34dd21cbcbbf8680f9624d5ddfa25e49232e6768200f74ddacb5347fd7a5f6dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA7 2820 bytes
font_02_sfnt_off00009948.bin
2aa5f75731ce228eb108c5d7ba78fcf9c19ee4c9e640e1738d5748e499ff9746		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9948 18020 bytes

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