Malicious PDF — malware analysis report

Static analysis result for SHA-256 763ac00e99825a12…

MALICIOUS

PDF

33.7 KB Created: 2021-06-29 12:28:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 99e684af688765edc8b21b6e38618380 SHA-1: dc8058f975955fef3769faff1738a3142175a59c SHA-256: 763ac00e99825a126de29698991290cde3d9f04c9dd57113176d11c0be816cab
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/free-robux-works-100-game-hack PDF link annotation
    • https://www.mentalhealthnow.co.uk/uploads/files/files/roblox-exploit-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/top-10-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-hack-com_GM406889139.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/youtube-robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-mod-version-free-download-2021_GM406889139.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/pokemon-go-free-yamask_GM1094591345.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/hacking-in-parkour-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/how-to-get-free-marshmallows-in-backpacking-roblox_GM431946152.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/pokemon-go-free-play-online-without-downloading_GM1094591345.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/roblox-18_GM431946152.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/all-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/free-robux-and-tix-generator-2021-no-download_GM431946152.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/totally-free-coin-master-spins-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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F45 21232 bytes
SHA-256: 5630b0d8a6863c3db90f8b50d89878d29a74bd01f42c5da69fa852e4fa776756
font_01_sfnt_off00005d7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7F 19364 bytes
SHA-256: 54ac755348c504f53d64e7e01aab088d7bae8e478e88259250b780f82903a051

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