PDF static analysis report

Static analysis result for SHA-256 bf9bbda8d124533b…

SUSPICIOUS

PDF

34.1 KB Created: 2021-07-04 18:15:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2c627e9ec62b0fee4be2f116517fe477 SHA-1: d2a312a39057c43a232b4d1cf28f5fced58d43e3 SHA-256: bf9bbda8d124533b1653bc671362f61bca4786690e64ddc50a2d11b505faf083
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and text that lure users into downloading a potentially malicious application by promising free in-game currency. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports a malicious intent to redirect users to a download site. No scripts were extracted from this sample, limiting the ability to determine specific execution methods.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/431946152/free-roebucks-game-hack PDF link annotation
    • https://smark.com.tw/image/data/files/minecraft-esp_GM479516143.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-spins_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-online-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/robux-match_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/how-to-hack-pepoles-roblox-account_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/how-to-easily-get-robux-for-free-on-a-phone_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/roblox-prison-life-v2-0-hack-exploit_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/can-roblox-accounts-be-hacked_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-no-download-app-but-play-for-free_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/hacks-para-robux-gratis_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/dailyrobux_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-robux-game-guardian-script_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/how-to-know-if-someone-is-hacking-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_off00002f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F63 22480 bytes
SHA-256: b6bc253da4f6aa371e054d08250dab4455fcfd66cf4ea59ba13200324e1e889f
font_01_sfnt_off00006142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6142 18676 bytes
SHA-256: 4dadd4acfbae1c5356f416a7a6111ab95d08a1e008d0b5ed0c0e33bdf47e4fb3