Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4284a6786ba2826…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 21:04:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6bbec4cbdcce0dd3a93bdb5ec3f52e2e SHA-1: 939722189570c7d12fb80fde8aa2b4ebba08745a SHA-256: c4284a6786ba28268e4e28093b26ff7c32d3c320c404618887282397dbde2d34
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, with a primary URL identified as a lure for game hacks and generators. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it's designed to redirect users to potentially harmful content. No scripts were extracted, but the document's structure and embedded URLs suggest a phishing or social engineering attempt to lead users to a malicious download or exploit site.

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/oprewards-points-generator-game-hack PDF link annotation
    • http://opac.salatiga.go.id/slims7/repository/roblox-item-free-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-make-free-clothing-to-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-prison-life-gui-hacks-pastebin_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/infinite-money-roblox-injector-hack-pizza-place_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-codes-for-hacks_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-save-a-free-model-in-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/http-inject-hack-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-minigunner-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-hack-any-user-in-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-youtube-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/impact-hack-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-money-cheats-that-work_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-dragon-ball-future-online-script-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/i-has-cupquake-roblox-he-cheated_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_off000030bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BD 22204 bytes
SHA-256: 589d714fbf51c23dd239e1f15d2ff807fdc7240a699217d6ddfadb976196adcb
font_01_sfnt_off00006235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6235 18936 bytes
SHA-256: c272ade8f0f667fa31c102d32dc91e55ca68e3a8563b092fb1befac4b7a2a2f7

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