Malicious PDF — malware analysis report

Static analysis result for SHA-256 eea93097fd13577e…

MALICIOUS

PDF

43.5 KB Created: 2021-05-10 19:06:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 382d88349e0eafe9aa229bf8c6303e31 SHA-1: 1128db91530b37ea41725a4b1c8d388e40ec8cba SHA-256: eea93097fd13577e2eaf49cfe8c0beaaaf8d8dc892dab3fa3a381ca52770acb8
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that promotes "free game hacks" and "free Robux", indicating a lure for users to download potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and callback lures further supports a malicious intent. No scripts were extracted, but the overall pattern suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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/coin-master-el-tiger-card-free-game-hack PDF link annotation
    • http://damvallei.be/images/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://damvallei.be/images/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://damvallei.be/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://damvallei.be/images/how-many-levels-does-coin-master-have_GM406889139.pdfIn PDF document text
    • http://damvallei.be/images/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://damvallei.be/images/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://damvallei.be/images/minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://damvallei.be/images/win-free-robux_GM431946152.pdfIn PDF document text
    • http://damvallei.be/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://damvallei.be/images/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://damvallei.be/images/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://damvallei.be/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://damvallei.be/images/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • http://damvallei.be/images/robux-offers_GM431946152.pdfIn PDF document text
    • http://damvallei.be/images/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://damvallei.be/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://damvallei.be/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://damvallei.be/images/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://damvallei.be/images/coin-master-free-coins-and-spins-daily_GM406889139.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_003_off00004b9d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B9D 26252 bytes
SHA-256: 2938a47c2e7469aad8906d78fa1310d6675d99fde64ec7da1d4cebdd81bcb849
font_01_sfnt_off000087e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87E1 18244 bytes
SHA-256: 62951dc56a4098348a942f01ff7d9064ef2b90491a118746803c45398ddf7514

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