Malicious PDF — malware analysis report

Static analysis result for SHA-256 a796542351726da0…

MALICIOUS

PDF

32.4 KB Created: 2021-07-06 04:15:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 06f35af4c205413ad66e84cba6478ed8 SHA-1: abb064369b4686644f0ad30b72ed865cd6f5e90a SHA-256: a796542351726da0571f81ce187aa667121f51d10e415295643c8a015d5904a7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering 'free Robux' or game hacks, a common lure for phishing or malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically flags this behavior. While no scripts were extracted, the embedded URLs suggest the document's primary purpose is to redirect users to potentially malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/431946152/how-to-get-free-robux-game-hack PDF link annotation
    • http://pustaka-smpn3tpi.com/repository/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-codes-wiki_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-hacked-client-windows-10_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/joshy-roblox-hack-virus_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-admin-panel-twitter_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-roblox-code-in-muder-mystery-2_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-get-free-faces-on-roblox-pc_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/mosttechs-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-game-private-free_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-vehicle-simulator-cheat-engine_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/hack-para-dar-dinero-a-la-gente-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-spin-today-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-robux-glitch_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
font_00_sfnt_off00002a2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A2E 21660 bytes
SHA-256: 98c3f1c4989c27546102063addeda7ca5d6848eabed1d1b16197ea286237670f
font_01_sfnt_off000059cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59CB 18984 bytes
SHA-256: b02f235e187ca63825268846ce24859b9c73d6f06522f0e44481555b58ecada8

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