Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b9f0c14fd24e473…

MALICIOUS

PDF

45.1 KB Created: 2021-06-03 05:29:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2634b22cd4890b74526be47ffbd34461 SHA-1: 7dddc877d5fc977ff612cc95c105259644206c4d SHA-256: 1b9f0c14fd24e4739f95fb545fba322665dbec89829ec6f1ebab6e7065bccaec
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and free currency, such as 'coin-master-free-spins-2021-hack-game-hack'. The heuristic firings indicate this is a lure for game hacks, and the ML classifier strongly flagged the PDF as malicious. The document likely serves as a phishing lure to direct users to potentially malicious sites or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9804

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.online/app/406889139/coin-master-free-spins-2021-hack-game-hack PDF link annotation
    • https://sensorcamera-tw.com/upload/files/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/minecraft-free-download-mobile_GM479516143.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/best-hack-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004a18.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A18 24552 bytes
SHA-256: 39d992948edb9ddd972a9fe0c604dd877133e1a0e0523c5c36f4809884ef4395
font_01_sfnt_off000082f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F6 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008ce1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE1 18456 bytes
SHA-256: 01aac8443e047fcb7357b1b8ecb4a3fbe01c6e1da05f82155595583d2ef12cbf

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