Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa969a5e2e6e649c…

MALICIOUS

PDF

34.5 KB Created: 2021-06-30 00:14:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d4891ec9547aa0cf23780af243beb6ea SHA-1: a40aa011c633e7a824c134750bdaca8829174b36 SHA-256: aa969a5e2e6e649c2fd362306657851442921163a4d068be766f77979f74e0d5
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links designed to lure users into downloading game-related hacks or resources, a common social engineering tactic. The presence of a "PDF_SEO_LINK_FARM" heuristic indicates a mass generation of external links, likely for SEO manipulation or to distribute malicious payloads. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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/roblox-its-free-roblox-id-game-hack
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/is-minecraft-free-on-ps4_GM479516143.pdf
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/coin-master-free-cards-and-spin-link_GM406889139.pdf
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/boost9-com-roblox-hack_GM431946152.pdf
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/free-minecraft-texture-packs_GM479516143.pdf
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/how-to-hack-on-roblox-without-cheat-engine_GM431946152.pdf
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/robux-generator-without-human-verification_GM431946152.pdf
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/roblox-apk-hack_GM431946152.pdf
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin-links_GM406889139.pdf
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/free-coins-and-spins-coin-master_GM406889139.pdf
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/master-free-spin-and-coin-link_GM406889139.pdf
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/coin-master-hacks-free-spins_GM406889139.pdf
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/roblox-hack-download_GM431946152.pdf
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/roblox-scam_GM431946152.pdf
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdf
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/free-spin-link-in-coin-master_GM406889139.pdf
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-survey_GM431946152.pdf
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/coin-master-hack-no-human-verification-2021_GM406889139.pdf
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/free-robux-stream_GM431946152.pdf
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdf
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/free-gifts-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_off00003082.bin
d96253bd25498de27a4587e9afa6b32be005e1bf6e71d076c727bf08092154a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3082 22236 bytes
font_01_sfnt_off000061d0.bin
a46d267248896d0af4491fb213c86892858bd8815ea85c0607818414edc55ec0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61D0 18928 bytes

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