PDF static analysis report

Static analysis result for SHA-256 158da93523f81353…

SUSPICIOUS

PDF

34.2 KB Created: 2021-07-04 14:02:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 11689b8fb362d27557f3ce9b22862f08 SHA-1: 80668d1156d7b311f2472d0468a48dc399d64927 SHA-256: 158da93523f81353552663fdbbb89431c1a9bb75b5aa9dfcc402cbf1f6053f87
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent external URI pointing to a site offering 'tiktok-free-book-hack-game-hack'. The ML classifier strongly flagged this PDF as malicious, and the presence of download-related lures reinforces the malicious intent. The document likely serves as a lure to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 3

  • 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 http://netcdn.tw/app/835599320/tiktok-free-book-hack-game-hack PDF link annotation
    • https://www.lincolnec.edu.np/userfiles/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/hack-sur-roblox_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/free-roblox-gift-card-code-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/how-to-get-roblox-admin-for-free_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/hacker-man-roblox-script_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/robux-robux_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/mcpe-master-hack-unlimited-coins_GM406889139.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/roblox-escape-mcdonalds-free_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/roblox-bear-hacks_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/how-do-you-get-robux-for-free-on-laptop_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/how-to-get-free-stuff-on-roblox-mobile-2021_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/redeem-code-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/how-to-earn-robux-on-roblox_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
font_00_sfnt_off00003136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3136 22284 bytes
SHA-256: 04e89ad0dfbedf6591b3adf5f4a0497f04d5ddfa45abb98049ccaf1765a4c32a
font_01_sfnt_off0000630f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630F 18188 bytes
SHA-256: 3c8f7632ff9072bab7b24aa2fbbeee4bad4083c0b0e8c38e8229e94caaaa664f