PDF static analysis report

Static analysis result for SHA-256 840db6fd28ebbcfa…

SUSPICIOUS

PDF

47.6 KB Created: 2021-06-09 04:49:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c6f8298c7b43ffe5759ae5c2087d1533 SHA-1: d6a6e7881e70273894d889b132332d6aa03c51b0 SHA-256: 840db6fd28ebbcfa2126fdc6e10cb502f405dabbb47cf31f9a22252a1a519b6e
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a document body that explicitly advertises free in-game currency for popular games, acting as a lure. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple external URIs suggests a download or redirection attempt. Although no scripts were directly extracted, the nature of the lure and the high ML score indicate a high likelihood of this document being used to distribute malware or lead users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 3

  • 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.tw/app/431946152/fre-robux-for-roblox-game-hack PDF link annotation
    • http://educhina.mn/editor/files/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-get-80-robux-free_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-minecraft-com_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-spin-link-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fb9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FB9 26276 bytes
SHA-256: 2bb62b90e7decee0018b38580c027a617859ac2c84897ff779cf9ab56d3199d8
font_01_sfnt_off00008c4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C4B 3500 bytes
SHA-256: e49a868379cd3c37e631c5a53c010e21f38d803532a2b8417aee82315d4e8634
font_02_sfnt_off000097ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97ED 18088 bytes
SHA-256: 0939d253d402a816ad52dbaa25ce611969f289c2b645a5af93bd4c537f712fd4

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