Malicious PDF — malware analysis report

Static analysis result for SHA-256 51e6b51b1e2d14b7…

MALICIOUS

PDF

38.7 KB Created: 2021-05-20 12:43:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c5a4694793f0c93e7c297ae230d8c605 SHA-1: 4fe882110ea379bb5be2d7fb0ed05b58ab92015b SHA-256: 51e6b51b1e2d14b704776756402b7de905ddc5b71076e3bddcf2b4e97bb021d8
122 Risk Score

Malware Insights

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

The PDF document contains social engineering lures, including a fake download button and instructions to press Win+R, consistent with ClickFix attacks. It also includes a primary URL pointing to a Minecraft generator, likely a lure for a malicious download. The document body, though partially corrupted, contains references to 'Minecraft Bedrock Free Server Hosting' and a 'CLICK HERE TO ACCESS MINECRAFT GENERATOR' call to action, reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

Heuristics 5

  • 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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/479516143/minecraft-bedrock-free-server-hosting-game-hack PDF link annotation
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/roblox-c9m_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/free-roebucks-com_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/coin-master-hack-tips_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/free-robux-youtube_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_002_off0000365e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x365E 29668 bytes
SHA-256: 227639e3e315f1b0e29fea477d80880276b21abacc2bf101bd49e58154c05b63
font_01_sfnt_off00007514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7514 18672 bytes
SHA-256: 5baa597ceebb7173861118a54c9708b38703675a1839245e0c8f4bf1dfc6d3a9

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