Malicious PDF — malware analysis report

Static analysis result for SHA-256 c06231c94c5099ee…

MALICIOUS

PDF

43.6 KB Created: 2021-05-13 23:34:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 20f082a2f93c59f5de0811db38559e88 SHA-1: b1bd01c84823dd8a6a02c091a939b2ed4507afdc SHA-256: c06231c94c5099eec8976f7903f759b604a081c66aa6bb58169bbbe8658bfbd0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector, specifically `https://netcdn.xyz/app/431946152/how-to-get-free-robux-no-human-verification-2021-game-hack`. The document body also contains this URL and other similar lures, suggesting a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a malicious intent to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/how-to-get-free-robux-no-human-verification-2021-game-hack PDF link annotation
    • http://knjiznica-oroslavje.hr/files/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/minecraft-esp_GM479516143.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-spins-coin-master-site-wwwquoracom_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/fake-robux-codes_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-free-food-for-pet_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/roblox-money-hack_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_off00004be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BE5 25488 bytes
SHA-256: 6efe9e4a6e8ae2efaaa93e21250af547241f1398911115c564f46e2da0f889e8
font_01_sfnt_off000084c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84C4 19428 bytes
SHA-256: dc7c459a90b1a398d2ee51f52972ed8a07904c77cd045887558a99bdb9823e3c

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