Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce6c9b48a1189d2c…

MALICIOUS

PDF

43.0 KB Created: 2021-05-14 04:32:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: eb21dc550cc8e4e80685857f2fe91022 SHA-1: abf9b10f11603c7be448a76433e015cf21a33ee2 SHA-256: ce6c9b48a1189d2ce17726a85ec52118e75bba4bb3b09f8ab3fdbdf052dda82d
200 Risk Score

Malware Insights

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

This PDF document employs a fake CAPTCHA lure to deceive users into clicking malicious links, such as https://netcdn.xyz/app/406889139/coin-master-free-spins-today-daily-links-game-hack. The document's structure and embedded links strongly suggest it is designed to redirect users to potentially harmful websites, likely for phishing or malware distribution. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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
  • 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.xyz/app/406889139/coin-master-free-spins-today-daily-links-game-hack In PDF document text
    • http://www.ladillo.com/images/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/best-hack-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.ladillo.com/images/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://www.ladillo.com/images/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • http://www.ladillo.com/images/robux-miner_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • http://www.ladillo.com/images/minecraft_GM479516143.pdfIn PDF document text
    • http://www.ladillo.com/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/www-rbx-com_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
stream_003_off000048f1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48F1 27032 bytes
SHA-256: a807ad6cc917997e5cd34f8bbaa7dabf3faf373d878d68e3cc9eaedb467bf07a
font_01_sfnt_off000084ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84AB 18652 bytes
SHA-256: 52d597ff4b9023df6b3510b92f87dc1d2329aed0448bc9fa59130058567cb992

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