Malicious PDF — malware analysis report

Static analysis result for SHA-256 6479114cf9c0d9bc…

MALICIOUS

PDF

33.5 KB Created: 2021-07-04 17:21:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: d83cf467345204b908d6571f1a1733ba SHA-1: e356726bcfc960f73104bd86bcd1606de42e531f SHA-256: 6479114cf9c0d9bc659a6c3b25a1b2fcb799f5bc4cc7ab5887cd7331679214f5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one pointing to a known malicious redirector infrastructure at http://netcdn.tw/app/479516143/how-to-get-minecraft-for-free-ios-game-hack. The document body and heuristics indicate a lure for game hacks or generators, suggesting a social engineering tactic to trick users into downloading malware. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/479516143/how-to-get-minecraft-for-free-ios-game-hack In PDF document text
    • http://opac.stiesa.ac.id/repository/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/robux-tool-hack_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/ghouls-bloody-nights-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/hacks-to-get-money-on-roblox-adopt-me_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/cute-clothes-on-roblox-free_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/how-to-use-redstone_GM479516143.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/coin-master-hack-mod-apk-35-8_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/robux-hack-generator-secret_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/cheat-engine-for-roblox-mac_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
font_00_sfnt_off00003023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3023 21968 bytes
SHA-256: 3857ed36c8742c111f500394f9f2094ba7d155e12d8eb63740fa3e81ab9e8d7b
font_01_sfnt_off0000608c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x608C 18164 bytes
SHA-256: 3bdff242c02567ee207b71fad6ef4d90e4cc38b5842f7ad781c544ed1b5ff3f4

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