Malicious PDF — malware analysis report

Static analysis result for SHA-256 eacc9c4cb59d0192…

MALICIOUS

PDF

33.6 KB Created: 2021-07-05 07:01:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 46bb882383c05ee29074a435bd9c1d37 SHA-1: 36fbb3fc12c557c42ab7548bcda453eeabc4699c SHA-256: eacc9c4cb59d01926257ad789e7c058bb92c71d437e482b8d85f584be97776e3
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.tw/app/479516143/mc-update-game-hack PDF link annotation
    • https://3qblocks.com.tw/image/data/files/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-online_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/cmo-ser-hacker-en-roblox_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/login-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-get-free-robux-2021-without-human_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/wurst-112-2_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/1-000-subscriber-roblox-hack-tool_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/roblox-account-free-hack_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-gte-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/robux-now_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/give-me-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-coins-coin-master-2021_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_off00002eaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAF 22396 bytes
SHA-256: e82b30fb5cb86ced734c8936d103ec7e97ef9f39f448ae6ed0b8d82894d01a93
font_01_sfnt_off00006097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6097 18272 bytes
SHA-256: 82dc0b43539ef2d7bbb3eb626da65d3f7def0b72e0a32f2638731d13eaa39649

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