Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaae91dd73ba7381…

MALICIOUS

PDF

41.7 KB Created: 2021-06-13 22:00:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: e7d6ffa5b47cc9737ed29ae559b67fd4 SHA-1: fc795a6560ba1119a18283c933d896d56433a3c2 SHA-256: aaae91dd73ba7381e270113b77e33cc92a4b65eeca0815eeb168839b41323572
168 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and links to a known malicious redirector, indicating it's designed to lure users to potentially malicious websites. The document body and heuristics suggest a "free generator" or "game hack" theme, which is a common social engineering tactic. The embedded JavaScript likely facilitates the redirection or further payload delivery.

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.
  • 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.co/app/406889139/free-coin-master-spins-link-game-hack In PDF document text
    • https://sundae.co.th/js/userfiles/files/is-tiktok-app-free_GM835599320.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/how-to-get-free-robux-in-games-2021_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/coin-master-free-food_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/earn-robux-online_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/get-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/coin-master-hack-spins-app_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/how-to-hack-coin-master-spin_GM406889139.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
stream_003_off000049c0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C0 24404 bytes
SHA-256: d2a915000b51cb2cb7aadedc55937df52dd270c1e1aba71da10cd9140b72da93
font_01_sfnt_off00008138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8138 18056 bytes
SHA-256: 3a13f115a00b8b7b194300b8b076c3bf70984f89fe406390bc378e2507b22e35

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