Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3aca1f28c6cffc8…

MALICIOUS

PDF

35.0 KB Created: 2021-06-27 01:43:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d1f94e620f75ab8cc1f4398a4b002de2 SHA-1: a041272014605edfb79a462ecdbdec8077e98b58 SHA-256: c3aca1f28c6cffc88ed1df346b457ef417a2dc926f07280638fbcb35b666dc48
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to free game items and hacks, directing users to a suspicious URL. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs further supports a phishing or malware distribution attempt. No scripts were extracted, but the document's structure and embedded links suggest it's designed to trick users into navigating to a potentially harmful site.

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.co/app/431946152/free-snowman-package-in-roblox-game-hack PDF link annotation
    • https://ezgolfer.com.tw/image/data/files/minecraft-com-free_GM479516143.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-hack-for-robux_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-robux-2021-no-waiting-instant-no-inspect_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/roblox-tix-generator_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/roblox-free-templates-blank_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/god-mode-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-gold-cards-free_GM406889139.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
font_00_sfnt_off00003119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3119 22440 bytes
SHA-256: 6308d6cc1ae30e5635b7b81ee9c8b0a32c0fbbaa5e21251a46b70ab056820aa3
font_01_sfnt_off000062eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EB 19400 bytes
SHA-256: 345d3a6f520b1a75556c552e54a65134b3842862cb95be63bef7a8f36de32fc7

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