Malicious PDF — malware analysis report

Static analysis result for SHA-256 d88bb954c44bbb8d…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 09:24:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 477a9e0756f7be4e24cea2f24d89a563 SHA-1: aac3cd069e25c0898159284d3937b63e79853728 SHA-256: d88bb954c44bbb8dc9144f8625bc51d34ee3e9e4651c41c5979d2d6c46d394ff
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs and a visual call-to-action, strongly suggesting a phishing or malware distribution attempt. The ML classifier also flagged this PDF as malicious with high confidence. The URLs point to sites offering game-related cheats and hacks, which are common lures for downloading malware or redirecting to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/free-coins-and-spins-coin-master-game-hack PDF link annotation
    • http://183.91.70.7/repository/best-free-spin-app-for-coin-master_GM406889139.pdfPDF link annotation
    • http://183.91.70.7/repository/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/roblox-jailbreak-hack-client-we-are-devs_GM431946152.pdfIn PDF document text
    • http://183.91.70.7//repository/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://183.91.70.7//repository/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • http://183.91.70.7//repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://183.91.70.7//repository/coin-master-daily-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
    • http://183.91.70.7//repository/coin-master-heaven-daily-free-spins-and-coins-links_GM406889139.pdfIn PDF document text
    • http://183.91.70.7//repository/coin-master-hack-spins-apk_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/how-can-get-free-robux_GM431946152.pdfIn PDF document text
    • http://183.91.70.7/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://183.91.70.7//repository/get-robux-today_GM431946152.pdfIn PDF document text
    • http://183.91.70.7//repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://183.91.70.7/repository/get-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://183.91.70.7//repository/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://183.91.70.7/repository/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • http://183.91.70.7//repository/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • http://183.91.70.7/repository/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000031d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31D8 22812 bytes
SHA-256: 7104bd6d8adb6cdd0d84b9ccce23719227828cdd4e0bb95fdff3b7fe8157999f
font_01_sfnt_off00006509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6509 18348 bytes
SHA-256: c90f632020bcb1e728f62a43997badda2860e0d329262e99dedc1f8a12c39115

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