Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e1531b07b70bccf…

MALICIOUS

PDF

48.8 KB Created: 2021-05-14 03:11:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d26a2d36e6b91dadaeeeb610e90e5afc SHA-1: 1f1ca7fa79bca8241d46c451fbc0e82b5dd9bc31 SHA-256: 1e1531b07b70bccfe9321279eb801c8e22432e7e24ce7e4906250f1aa7381625
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 0.8642

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.xyz/app/406889139/free-links-for-coin-master-2021-game-hack PDF link annotation
    • http://www.brtes.com/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/free-admin-roblox_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/coin-master-fb-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/robux-converter_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://www.brtes.com/images/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://www.brtes.com/images/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/roblox-hacking-website_GM431946152.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bb6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BB6 24760 bytes
SHA-256: 78ca7f8c980c381276bbb671572ac24bbab2ccbf408197a45170e8095c3cd493
font_01_sfnt_off00008496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8496 4028 bytes
SHA-256: a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91
font_02_sfnt_off00009236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9236 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00009c25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C25 18284 bytes
SHA-256: a2acd8bf1a51d4e254a7633d59ee55714bf8557f87202f8b12d552e9cd1876aa

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