Malicious PDF — malware analysis report

Static analysis result for SHA-256 058f00093b4c3e0f…

MALICIOUS

PDF

39.4 KB Created: 2021-05-30 09:53:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9e0623c11e809e4264ee39f2a8d0ce31 SHA-1: e25774ae9e5c71690eb34cd0b229f7de9d3b9b63 SHA-256: 058f00093b4c3e0fc1173b7ef4e10506f52b3d962b84175d1b66b06ef65a8261
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains multiple embedded URLs and a heuristic firing for a recovery secret/private key request, indicating a phishing attempt. The primary URL points to a lure for 'Coin Master Free Spins', suggesting a scam to steal game-related credentials or lead to further malicious content. No scripts were extracted, but the presence of external URIs and the nature of the lure strongly suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9926

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-spins-link-today-instagram-game-hack
    • https://isaf.co.za/wp-content/uploads/fsqm-files/roblox-hack-generator_GM431946152.pdf
    • https://isaf.co.za/wp-content/uploads/fsqm-files/hack-robux_GM431946152.pdf
    • https://isaf.co.za/wp-content/uploads/fsqm-files/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • https://isaf.co.za/wp-content/uploads/fsqm-files/minecraft-hacked-client-112-2_GM479516143.pdf
    • https://isaf.co.za/wp-content/uploads/fsqm-files/coin-master-free-spins-and-coins_GM406889139.pdf
    • https://isaf.co.za/wp-content/uploads/fsqm-files/minecraft-pe-free-apk_GM479516143.pdf
    • https://isaf.co.za/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-verification_GM431946152.pdf
    • https://isaf.co.za/wp-content/uploads/fsqm-files/roblox-hack-game_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003c7a.bin
5df51b64d8ab744a9faa3ceac52f20a0921cd8d4092957a8fecf5cbe8313e394
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3C7A 25160 bytes
font_01_sfnt_off00007609.bin
c3cae131f36bdfe9c813bd150295f39ca0ceeabf3546a2df254cc03f93d9c6e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7609 18960 bytes