Malicious PDF — malware analysis report

Static analysis result for SHA-256 3107e5ce86441c81…

MALICIOUS

PDF

42.5 KB Created: 2021-05-11 16:43:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a3ec388e63e67648a794b71b6b2ff778 SHA-1: c950ef9e4f4eaf3751c50059285e919d41aab257 SHA-256: 3107e5ce86441c81ad67a10f4251b8058d5d0dd53710acfb3a20085dd17e21df
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, with a primary lure related to 'free game hacks' and 'generators'. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URIs and a visual download button heuristic further supports a malicious intent. While no scripts were explicitly extracted, the document's structure and embedded links suggest it is designed to redirect users to potentially harmful content or initiate downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/how-to-change-username-on-roblox-for-free-game-hack PDF link annotation
    • http://whiteyaknepal.com/userfiles/files/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-robux-place_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004804.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4804 24848 bytes
SHA-256: e17a44c72c0824a793498627861ac5c60bd99698de51dcba9a6c5456327c4419
font_01_sfnt_off00008129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8129 19240 bytes
SHA-256: 0a326c0d94e4ba5b42cc4a4255d11f6f465e6ea82f55ecdc2c3181a0308aa342

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