Malicious PDF — malware analysis report

Static analysis result for SHA-256 62042eda19406104…

MALICIOUS

PDF

35.0 KB Created: 2021-07-03 19:22:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: c6949af3cd9a010c43b92df5c13cf6ae SHA-1: 3ad9032d181d1f275d283a226ad0ca73cb4367ff SHA-256: 62042eda19406104097b08e518273e5e3b20bfc64a66b97fa359e906c53ef177
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting game hacks and free spins. The primary lure URL is http://netcdn.tw/app/406889139/coin-master-free-spins-uk-game-hack. The document's content and embedded links strongly suggest a phishing or scam attempt designed to trick users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/coin-master-free-spins-uk-game-hack In PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/roblox-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/roblox-online-generator-free-robux_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/free-robux-com_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/comment-faire-cheater-sur-roblox_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/iro-free-robux_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/how-2-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/raindrop-free-roblox_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/roblox-no-verification-hack_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/blue-hack-roblox-download_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/how-to-hack-any-account-roblox-2021-windows-10_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/how-to-get-10-000-robux-for-free-on-ipad_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/roblox-jailbreak-wall-hack-download_GM431946152.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://gabrielprogramador.com.br/alfaleiloes/upload/files/robux-free-promo-codes_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_off00003205.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3205 22904 bytes
SHA-256: e1af0c964f632db969d3b3c2c5934a0577bca4e5af7175f3c85cadb82a434444
font_01_sfnt_off0000656a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x656A 18532 bytes
SHA-256: 1c622a1a34e1483e005aae8c78a1ee4d55f620022fc159958e1f7081386f50ee

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