Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb7e5c24f357a30a…

MALICIOUS

PDF

34.4 KB Created: 2021-06-29 19:48:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d1869c305a27f0beb0f78c1816e30f3b SHA-1: d4108a022df41c0091202a7eb8e9d275de4cc18a SHA-256: fb7e5c24f357a30a15c2c41d9f1202d7dd52f22eae5add11ccc90fd2562f87d7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/roblox-renders-free-game-hack PDF link annotation
    • https://dentmate.com.tw/image/data/files/roblox-hack-dll-2021_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/rewards-roblox_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-get-free-robux-using-your-phone_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-hack-apk-link_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_off00003010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3010 22508 bytes
SHA-256: b699f9d62e49e08e97c01d8fd48a7e12206ba601340112b022c7692330320f54
font_01_sfnt_off0000622f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x622F 18824 bytes
SHA-256: 999e89f625a025867b5904923a9268b47c6f07add5cef696c3c00456f85602c4

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