Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cddba0c6d58a63c…

MALICIOUS

PDF

35.5 KB Created: 2021-07-03 14:47:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1744a777d5aa8ad73eaf439737dd9934 SHA-1: b7927c7f70b52dc5b92b913b37c18a999ac55aa2 SHA-256: 3cddba0c6d58a63cbbed657a2fc2101f04c7d5084257cfb4961704cbe5809167
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links and embedded URIs pointing to websites offering game hacks and free spins, a common lure for malicious downloads or phishing. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this intent. While no scripts were explicitly extracted, the PDF structure itself can host malicious JavaScript, and the presence of numerous external links suggests a drive to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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/406889139/coin-master-free-spins-2021-app-download-game-hack PDF link annotation
    • https://wenshan.com.tw/upload/files/1-million-robux-hack_GM431946152.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/dll-file-cheats-on-on-roblox_GM431946152.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/download-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/is-tiktok-free-on-android_GM835599320.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/how-to-get-free-roblox-money-on-a-phone_GM431946152.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/www-roblox-com-download-free_GM431946152.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/free-autoclicker-for-roblox_GM431946152.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/how-to-hack-your-account-back-on-roblox_GM431946152.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/roblox-tiny-tanks-hack_GM431946152.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/free-robux-market_GM431946152.pdfIn PDF document text
    • https://wenshan.com.tw/upload/files/free-roblox-aesthetic-outfits_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_off00003437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3437 22144 bytes
SHA-256: 0f124b38b1fe6fcee22317fae4f4b6e2eea23585f38c9c92446be897a383a26d
font_01_sfnt_off00006556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6556 19156 bytes
SHA-256: 610ae378c9cc4c83123dbbc111aaf327ebb15e20175b345a881081f690b9164c

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