Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd3ee2612e27da7d…

MALICIOUS

PDF

36.1 KB Created: 2021-07-05 14:22:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8f06e8da3b976bf48615044ca49fa437 SHA-1: abb82fb6e1adf1b7d8ad828530730903686b4030 SHA-256: bd3ee2612e27da7dddbd55fd26527d9264ea0cf2ed61b87565c088a68f75cf92
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent link promising game hacks, which is a common lure for phishing or malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. While no scripts were directly extracted, the nature of the lures suggests a potential for JavaScript execution or redirection to malicious sites designed to exploit users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/how-to-get-free-spins-on-coin-master-hack-game-hack PDF link annotation
    • https://www.alamac-kitbag.co.uk/uploads/files/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/game-hunters-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/robux-hack-give-250k_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/how-to-hack-in-arsenal_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/roblox-free-followers_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/free-hair-roblox_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/roblox-how-to-get-free-robux-no-hack-no-cheat_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/how-to-download-a-roblox-jail-break-hack_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/download-free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/free-robux-with-no-downloads_GM431946152.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_off0000351b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x351B 23424 bytes
SHA-256: d02e440e58043831709a93c243965f321e020ae60791d41845a2c9adfce6b112
font_01_sfnt_off000069e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69E4 18508 bytes
SHA-256: 49bb361051a993f9084e846f2e5cc7d9ef6f782e1735768e7a619114b4d1f8ea

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