Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ed06f5892eec943…

MALICIOUS

PDF

34.6 KB Created: 2021-07-08 05:04:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b52e78d6c1322f77d76e1b3a22ee49fb SHA-1: b6783ab4c1504a93f3d55683c7441b431e820c26 SHA-256: 3ed06f5892eec94399c6b9488e6367c8772b7887664324e726d399af9e8f21ad
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains numerous URLs advertising game hacks and free in-game currency, strongly suggesting a lure for users to download malicious content. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were directly extracted, the presence of embedded URLs and the document's content indicate a phishing or malware distribution attempt, likely via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/406889139/stock-speed-coin-master-free-spins-game-hack PDF link annotation
    • https://www.metal.hr/files/hot-to-hack-roblox-on-mac_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/is-there-an-anti-cheat-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/hack-para-roblox-pet-simulator_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/robux-earning-sites_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/cmds-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/coin-master-village-4_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn macro / runtime command snippet
    • https://www.metal.hr/files/free-robux-pc_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/super-simon-says-hack-roblox-espaol_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/filesIn macro / runtime command snippet
    • 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_off0000312c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x312C 22664 bytes
SHA-256: 11e5d1b4bd347e05c72a7b4947b53626f816fb94285a18be41c22323788a6b1b
font_01_sfnt_off000063bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BC 18520 bytes
SHA-256: a519bba55fcd2911d38b75876f0299d704b9845a8a755fb00f2a104f1f940b93

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