Malicious PDF — malware analysis report

Static analysis result for SHA-256 310fa8771587f2b7…

MALICIOUS

PDF

45.3 KB Created: 2021-06-07 09:18:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 04fe8c27a4d9f50acbe7f4f4560ed71c SHA-1: 31066dc897c77c0fec565e3ec98e0ad3b365ad69 SHA-256: 310fa8771587f2b7868ea6a3ede2da50fb5c0b0e62f9001d4dffea47486f63ae
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document contains a lure for free game currency, directing users to a URL that likely hosts a phishing page or malware. The presence of an embedded URI and ML classifier flagging indicates malicious intent. The document's content and embedded URI suggest a phishing or credential harvesting attempt, potentially leading to further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.tw/app/431946152/free-roblox-currency-game-hack PDF link annotation
    • http://nebraskahospitalityhalloffame.com/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/best-site-for-free-coin-master_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-com_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/rbx-earn_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/minecraft-free-download-chromebook_GM479516143.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_004_off000051e9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51E9 26492 bytes
SHA-256: 3c9fc97c075329d44937345f218eaec651207e95f9c3219902a83df36eb1afa1
font_01_sfnt_off00008e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E94 18268 bytes
SHA-256: 7ac40c6fbab8373240fe0b067dc29952fa719f63788cee246acd64167177b6ef

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