Malicious PDF — malware analysis report

Static analysis result for SHA-256 75fe1ce5f89730ff…

MALICIOUS

PDF

36.8 KB Created: 2021-05-24 00:23:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 139f56305d90da9b59abfd625eb184f3 SHA-1: a0935828bbfa108f6d78e93961d9097794ede5a5 SHA-256: 75fe1ce5f89730ffe71ff829927720998dab321f0a633c4b79797a77e829ec0b
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and a call-to-action phrase, directing the user to external websites that likely host malicious content or scams. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple related URLs reinforces the phishing or malware distribution attempt. No scripts were extracted, but the document's structure and embedded URIs suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/haktuts-coin-master-free-spins-game-hack
    • http://www.notaioricci.it/images/free-coin-master-spins-2021-link_GM406889139.pdf
    • http://www.notaioricci.it/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • http://www.notaioricci.it/images/how-you-get-free-robux_GM431946152.pdf
    • http://www.notaioricci.it/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://www.notaioricci.it/images/coin-master-free-spins-2021-ios_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003577.bin
1ef2c8b688c068c68f5d99407db6b62a5273d4c4c6b96b30f23292e117264c3b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3577 24916 bytes
font_01_sfnt_off00006efc.bin
d21f7c9777ff22c572caba6bc61bff535e054503ba9d308437b2513133ac2854		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFC 18196 bytes

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