Malicious PDF — malware analysis report

Static analysis result for SHA-256 7daad1d28cdafb63…

MALICIOUS

PDF

43.6 KB Created: 2021-05-19 06:33:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8eaced14e83af3d47eb6f66d4ab5853d SHA-1: cd69944c131bd3f296b874b24118679f2503c786 SHA-256: 7daad1d28cdafb63cf082e53a3f847a519cca6ce05a90223e83f0d6998d9763b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for free Robux, impersonating Microsoft, and directs users to malicious URLs. The ML classifier strongly flagged this PDF as malicious, and the presence of brand impersonation for credential phishing indicates a malicious intent. The document body and embedded links point towards a scam or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/how-to-get-free-robux-2021-easy-game-hack.
  • 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/431946152/how-to-get-free-robux-2021-easy-game-hack PDF link annotation
    • http://spentulib.com/search/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search/repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search//repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://spentulib.com/search/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search//repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search//repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search//repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://spentulib.com/search//repository/coinmaster-links_GM406889139.pdfIn PDF document text
    • http://spentulib.com/search/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search/repository/coin-master-unlimited-spins-apk-free-download_GM406889139.pdfIn PDF document text
    • http://spentulib.com/search//repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search//repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search//repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://spentulib.com/search//repository/free-robux-hack-no-human-verification-or-survey_GM431946152.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_off0000495f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x495F 26220 bytes
SHA-256: e96612315edacf8e0559c382e5f621354fa05eab2d38ad7a3560f8e98ab6471c
font_01_sfnt_off00008559.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8559 19092 bytes
SHA-256: cc4041fc50bd2ea9a1268967e32916156e3a634973a216864dd7f220ceb04504

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