Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa83689e51e5ef42…

MALICIOUS

PDF

41.4 KB Created: 2021-05-19 03:30:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ecb6abdc18e8e45bf2bc185ba900881d SHA-1: d68948174594e760d40321c37761ba2775dc2138 SHA-256: aa83689e51e5ef420090760750ed180fbe7ec784d959bb8e53c299b55903379f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body and embedded links reinforce this, suggesting the primary goal is to trick users into visiting a malicious site. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/406889139/coin-master-fan-page-free-spins-game-hack PDF link annotation
    • http://lib.uho.ac.id/library//repository/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/roblox-rules_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-raid-link_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/www-robux-us_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/install-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-club-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-free-school_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spin-download_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/bloxawards-com-earn-free-robux_GM431946152.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
stream_003_off000049d2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49D2 23612 bytes
SHA-256: f8510f3a8dba84083acfed8b88ef655facebf91b82344deec5340f9f9c0d20c6
font_01_sfnt_off00007f24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F24 18328 bytes
SHA-256: d106028e9c816c4ed38d7f9dbfb4c1b42a2571be69ef627f7b4a635c4c6a8b94

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