Malicious PDF — malware analysis report

Static analysis result for SHA-256 08c34e2fd4122c40…

MALICIOUS

PDF

45.3 KB Created: 2021-06-10 19:14:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2f267d13281c384ac322e7345db64838 SHA-1: db64fcd062edb1e7e179371ace8f4b2661e7a920 SHA-256: 08c34e2fd4122c40f443fb87e137e3019bca48ef1d079ee23dd44feaf3aa91c4
62 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and a heuristic firing for a download button lure, suggesting an attempt to trick the user into downloading a payload. The document body, though partially corrupted, references 'free robux' and 'game hack', aligning with common phishing and scam lures. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9804

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/irobux-fun-free-robux-game-hack
    • http://carmen-duran.com/images/free-coin-master-gold-cards_GM406889139.pdf
    • http://carmen-duran.com/images/roblox-password-hacker_GM431946152.pdf
    • http://carmen-duran.com/images/free-robux-site_GM431946152.pdf
    • http://carmen-duran.com/images/master-coin-free-spin-daily_GM406889139.pdf
    • http://carmen-duran.com/images/free-coins-coin-master-2021_GM406889139.pdf
    • http://carmen-duran.com/images/coin-master-new-cards-hack_GM406889139.pdf
    • http://carmen-duran.com/images/how-to-get-free-robux-no-scam_GM431946152.pdf
    • http://carmen-duran.com/images/moon-static-coin-master-generator-hacks-free_GM406889139.pdf
    • http://carmen-duran.com/images/free-robux-link_GM431946152.pdf
    • http://carmen-duran.com/images/i-love-free-robux_GM431946152.pdf
    • http://carmen-duran.com/images/coin-master-hack-2021-app-download_GM406889139.pdf
    • http://carmen-duran.com/images/real-coin-master-hack-2021_GM406889139.pdf
    • http://carmen-duran.com/images/coin-master-free-spins-link-2021-today_GM406889139.pdf
    • http://carmen-duran.com/images/roblox-hack-generator_GM431946152.pdf
    • http://carmen-duran.com/images/make-free-robux_GM431946152.pdf
    • http://carmen-duran.com/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://carmen-duran.com/images/free-spin-link-coin-master-app_GM406889139.pdf
    • http://carmen-duran.com/images/free-robux-without-having-to-download-an-app_GM431946152.pdf
    • http://carmen-duran.com/images/coin-master-free-spins-through-coin-pop_GM406889139.pdf
    • http://carmen-duran.com/images/roblox36com-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bd3.bin
16e9a539ada612f87ed9ca8f9badb4f9c87cd4fda29f095d90e52e653e20c684
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BD3 25216 bytes
font_01_sfnt_off0000851b.bin
94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x851B 2824 bytes
font_02_sfnt_off00008ec9.bin
59cb2cccc0a34bcb4ec243df1360bab99c6bb02e27a00d112abf96cc933e6b9a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC9 18012 bytes