Malicious PDF — malware analysis report

Static analysis result for SHA-256 578e3df069eeaf90…

MALICIOUS

PDF

48.9 KB Created: 2021-06-09 09:18:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6bf52913da390883d1860c7ee316a4f4 SHA-1: 104fab8cfb50a68f84757124b6739832ca746b24 SHA-256: 578e3df069eeaf906deff6010e050e96f740e003053ed5a4c2dd2998447e4cf6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free game hacks' and directs users to external URLs, indicating a social engineering attempt to compromise the user. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, likely for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.tw/app/431946152/heists-free-roblox-demo-game-hack PDF link annotation
    • https://sensorcamera-tw.com/upload/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/roblox-free-executor_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-bonus_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-roblox-toy-codes_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/roblox-account-taker_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53B4 25880 bytes
SHA-256: 2e955ba817fcf02ea594d9f74bb89d942b363129737d10650bd05cc5102ef828
font_01_sfnt_off00008e69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E69 4016 bytes
SHA-256: 65af76ec03203ef0114573dbbeffadad37b1cfa9f1bbe7134801072545b5c22b
font_02_sfnt_off00009b82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B82 18600 bytes
SHA-256: d37f17fdaad0f70bf5eff6fc8c7824905eb7ee85031eb3a3d89ff7b330570641

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