Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eb6e3acfccd2678…

MALICIOUS

PDF

35.7 KB Created: 2021-07-09 08:53:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: aa9601aafaa00aa96de4935b3b390b9c SHA-1: e8bc16d82f5f276f17930d9152e1adea1cf3d73a SHA-256: 2eb6e3acfccd267837063d152fbf6ae13a9bd8670d2d4884b626ddb95e5bca11
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and references to game hacks and cheats, specifically mentioning 'Coin Master' and 'Roblox'. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' confirms this, pointing to a URL that likely serves as a redirector to malicious content. While no scripts were explicitly extracted, the nature of the lures suggests a potential for JavaScript execution or a direct download of a second-stage payload.

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-claim-spins-game-hack PDF link annotation
    • https://cleansui.com.tw/image/data/files/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/coin-master-hack-spins-apk_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/pokemon-go-free-promo-codes_GM1094591345.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/how-to-hack-roblox-accounts-2021-payed_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/free-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/free-halloween-costumes-roblox_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/roblox-hack-free-gui_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/how-to-hack-on-tower-of-hell-roblox_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/roblox-free-draw-script_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/mc-the-miner-free-robux_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/coin-master-free-gold_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/injector-de-hacks-para-roblox_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/roblox-robux-hack-2021-easy_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/dantdm-free-robux_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/tiktok-follower-bot-free_GM835599320.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/oprewards-com-earn_GM431946152.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
stream_002_off00003681.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3681 22552 bytes
SHA-256: aaed980d8c92d8dc3df4c5fe2d6a2a3ac59dfb73893e04d3ebb0e2222790279a
font_01_sfnt_off000068b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B1 18344 bytes
SHA-256: d8cccda057f64c947ab6ae0a87057660c374c9b091fe16e0f35107dc7c5d8ca5

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