Malicious PDF — malware analysis report

Static analysis result for SHA-256 9952d57b892a3643…

MALICIOUS

PDF

34.1 KB Created: 2021-07-03 21:05:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 555a72be523a0131a68a2b878ceb5d6d SHA-1: af9b6743de458a516fa3a9b660588e32ae3929e8 SHA-256: 9952d57b892a3643c006adc889919baddf1cc027951ecbba18a280e15ba8dce7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links and references to 'free Robux' and game hacks, specifically pointing to a URL hosted on 'netcdn.tw'. This indicates a social engineering lure designed to trick users into visiting a potentially malicious site. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/roblox-army-free-robux-game-hack PDF link annotation
    • http://library.ft.upnvj.ac.id/repository/free-roblox-dump-account-june-2021_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-roblox-toy-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/hacks-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/earn-robux-online_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/roblox-hack-v6-5-download_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-rainbow-stuff-you-can-get-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/someone-hacked-my-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/roblox-get-free-robux-online_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/tiktok-free-no-sign-in_GM835599320.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-robux-for-ipod_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/hacking-heists-roblox_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/roblox-hacking-tools-reddit_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_off00002dd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DD1 22340 bytes
SHA-256: 762e1604dfcc2d273db098486c18c1e80460b06bcce250cef8310a974a9803b0
font_01_sfnt_off00005fa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA0 19228 bytes
SHA-256: 5339edd26a46d5c8fe04f627c79d78710f89e028f0bde03da11f3fdfc149047d

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