Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bb6381734fd0a5d…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 05:31:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7d785fb90550330825464edd881fdaec SHA-1: 13f1060e4c5e661531f091e0e4265b14460162b2 SHA-256: 3bb6381734fd0a5dea6c42cd30bcc4e5c24b94affc8b9749d19e891e192ceab5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains invisible links and a visual download lure, directing users to URLs that promise game hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple URLs related to game cheats suggests a phishing or malware distribution scheme. The document's content and structure indicate an attempt to trick users into downloading potentially harmful files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Invisible PDF links to CAPTCHA-themed web lure high PDF_CAPTCHA_LINK_LURE
    PDF contains invisible clickable link annotations that point to a CAPTCHA/capcha-themed web path. This is a common phishing and ClickFix-style routing pattern: the PDF itself is inert, while the linked page performs the credential prompt or fake verification.
  • 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/dailyrobux-game-hack PDF link annotation
    • https://www.alarqam.ae/userfiles/files/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/get-free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/pubg-uc-free-hack_GM1330123889.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-no-download-app-but-play-for-free_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-robux-ohne-tan_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-tiktok-followers-instantly_GM835599320.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-hack-in-roblox-without-recaptcha_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_off00002f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F44 22644 bytes
SHA-256: b3c720ef97cb5d8f0566d5d5cdc703d957e42b2d24ce9d5d5adce23ad25ef35f
font_01_sfnt_off000060cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CB 19092 bytes
SHA-256: 319a3b741e60406540a19adb70d742732d8bf817a9bc58f36e4d58ba7e1a6a2d