Malicious PDF — malware analysis report

Static analysis result for SHA-256 c496511c26cdfcfa…

MALICIOUS

PDF

40.6 KB Created: 2021-05-11 06:04:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 62ab4b2f14e7fb2a5802c83a77727ea4 SHA-1: a4586e4d5eea9cc9a152944923530c2b1dd49b73 SHA-256: c496511c26cdfcfa29d1b4aa3d50545f5a04268cd7f6a8649bbef3a7c47a4595
76 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/coin-master-spin-hack-trick-game-hack PDF link annotation
    • http://en.furuise.com/Public/upload/editorfiles/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • http://en.furuise.com/Public/upload/editorfiles/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://en.furuise.com/Public/upload/editorfiles/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • http://en.furuise.com/Public/upload/editorfiles/minecraft-jar-free_GM479516143.pdfIn PDF document text
    • http://en.furuise.com/Public/upload/editorfiles/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://en.furuise.com/Public/upload/editorfiles/earn-robux-online_GM431946152.pdfIn PDF document text
    • http://en.furuise.com/Public/upload/editorfiles/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://en.furuise.com/Public/upload/editorfiles/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://en.furuise.com/Public/upload/editorfiles/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://en.furuise.com/Public/upload/editorfiles/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://en.furuise.com/Public/upload/editorfiles/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://en.furuise.com/Public/upload/editorfiles/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • http://en.furuise.com/Public/upload/editorfiles/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • http://en.furuise.com/Public/upload/editorfiles/coin-master-free-cards-link_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_003_off00004649.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4649 25072 bytes
SHA-256: 2de306bc526866d6bc79af5822869b1373140731b23dc52c3f486f1ea8d160d8
font_01_sfnt_off00007f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4A 17892 bytes
SHA-256: 4bfb4f0e693ff7770b94f95e309e8f86fd0b36da1cc4d74f533703e272a9a7c8

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