Malicious PDF — malware analysis report

Static analysis result for SHA-256 15aaca088bf733db…

MALICIOUS

PDF

33.5 KB Created: 2021-07-04 01:11:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f78f5b7ec3db6048c55a75aaca9fb600 SHA-1: 0e26e6d9d91cf284aa70efd7fc4da93b432704ad SHA-256: 15aaca088bf733db3e613222cbaddbcab42e88e620d31a54054fbbb765883dea
168 Risk Score

Malware Insights

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

This PDF document contains embedded JavaScript and links to known malicious redirectors, specifically advertising 'Coin Master Rewards Free Spins' and 'free Robux'. The primary malicious link, http://netcdn.tw/app/406889139/coin-master-rewards-free-spins-game-hack, is identified as a game hack lure and a known malicious redirector. The embedded JavaScript likely facilitates the redirection or exploits vulnerabilities to execute further malicious actions. The document's content and heuristics strongly suggest a phishing or scam attempt designed to lead users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://netcdn.tw/app/406889139/coin-master-rewards-free-spins-game-hack In PDF document text
    • https://sundae.co.th/js/userfiles/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/how-to-get-free-robux-2021-august_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/how-do-i-earn-robux-for-free_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/free-robux-jeux-roblox_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/free-robux-apk-mod_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/get-robux-easily-free_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/roblox-jailbreak-auto-rob-hack-on-mobile_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/free-robux-codes-2021-pastebin_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/free-roblox-accounts-2021-with-robux-bugmenot_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/coin-master-free-spin-today-2021_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E2E 22088 bytes
SHA-256: 5fa425131c4a5f157ceabd48e002319f87d5085c2d5331f9696dce6d6b49cb36
font_01_sfnt_off00005f55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F55 18512 bytes
SHA-256: 6bc66a7c9124691c5dbe04e2c8d08202ba1ceeb7f14ff76ef8eff16a4b1fabf8

Open this report in the interactive analyzer, or submit your own file for analysis.