Malicious PDF — malware analysis report

Static analysis result for SHA-256 888e7fcd3a47b843…

MALICIOUS

PDF

37.4 KB Created: 2021-05-22 21:13:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: da39ad7255639a9f6c11da3a920050d6 SHA-1: 6a35dde6e75a4281e6be84faa98e4e311b3e57d4 SHA-256: 888e7fcd3a47b84386e40a155fc8866ab987431846395218b251da826c054309
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains a lure for "Coin Master Free Link" and requests sensitive information such as recovery secrets or private keys, indicating a phishing or credential harvesting attempt. The embedded URL points to a resource that likely hosts a malicious payload or phishing page. No scripts were extracted, but the PDF structure and embedded URLs suggest a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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-free-link-game-hack
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-free-spins--spins_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/free-robux-no-verification-no-survey_GM431946152.pdf
    • https://www.simplenepaltravel.com/userfiles/files/minecraft-free-install_GM479516143.pdf
    • https://www.simplenepaltravel.com/userfiles/files/facebook-coin-master-free-spins-link_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-hack-club_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003749.bin
f2e27933e591663bb8951d4f3ef3ba6f4a612437c0f4ef1ecc4baf970c2d9638		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3749 25832 bytes
font_01_sfnt_off00007252.bin
5ce88b684446e36e89a0643934549b22fce1d776877bbe9d9a558feafde7429d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7252 17880 bytes

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