Malicious PDF — malware analysis report

Static analysis result for SHA-256 87023f0c00ea6d92…

MALICIOUS

PDF

44.6 KB Created: 2021-05-15 00:27:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 25c183c8702f12aaa91e9b29592fad66 SHA-1: df3a01abf20de5dbb11b526cde5d86fbd901f86e SHA-256: 87023f0c00ea6d92a9ed9d2c54f699855fa19391f0758db1e8a543031b8ab461
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains multiple lures for free game items and currency, directing users to external URLs. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs suggests an attempt to redirect users to potentially malicious sites or download further payloads. No scripts were extracted, but the overall pattern indicates a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/406889139/free-spins-coin-master-without-survey-game-hack PDF link annotation
    • http://educhina.mn/editor/files/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-coin-master-credit_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/robux-get-com_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-cards-for-free_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-hack-2021-ios-download_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b12.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B12 29428 bytes
SHA-256: db96097e82340f84cc5e81dfd8ccf13a1735d653801488aa765e643b0caf9d68
font_01_sfnt_off00008b1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B1D 18684 bytes
SHA-256: ad7fa04790fc34b76c8e1b16c403c61c32ceaee032d5a8afb0071baf0a254118

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