Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c30d72036c43583…

MALICIOUS

PDF

46.0 KB Created: 2021-06-03 11:48:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0a8f82825500ff56c6a1d4c3a0cfa6bb SHA-1: 2106341e5c9efa84ec5e9b3edad10155ec2c1782 SHA-256: 1c30d72036c43583d762e2edee9217bdf40e3dc33f6535defb2f1eb2c63b5c36
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free spins, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the embedded link is a clear indicator of a phishing or redirection attempt. Although no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to lead the user to a potentially harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

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.online/app/406889139/free-spins-for-coin-master-game-game-hack PDF link annotation
    • http://suaedy-library.net/repository/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/daily-free-spins_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-make-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-hack-apk-35-11_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/pokemon-go-5-free-raid-pass_GM1094591345.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/get-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-free-spins-no-survey_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-free-bundles_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004dd1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DD1 25376 bytes
SHA-256: faec8b758b76faef00c4e7452181b52b48490ed4042f23df0f42b634ca0f9654
font_01_sfnt_off00008766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8766 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off00009151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9151 18148 bytes
SHA-256: 3d9eadf91671033e4331a310c0b0805123b3ad5df85bc8ef5d318b7854ffa5cb

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