Malicious PDF — malware analysis report

Static analysis result for SHA-256 570eb463e32d8441…

MALICIOUS

PDF

44.8 KB Created: 2021-05-14 22:40:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 80847f044d9b62bd3836b5d0bc3562a2 SHA-1: aa30e4a2a6f15c3b1bd29b3cc72d736fb39548eb SHA-256: 570eb463e32d8441f4ef2a50338f5272144ee29be8f8049c9e17ce4ceb6a7fd2
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to game hacks and free currency, specifically mentioning Roblox and Facebook impersonation. It contains multiple links directing to external websites, including https://netcdn.xyz/app/431946152/roblox-com-redeem-game-hack, which likely serve as landing pages for credential phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/roblox-com-redeem-game-hack.
  • 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/roblox-com-redeem-game-hack PDF link annotation
    • http://www.salwangurgaon.com/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-hack-apk-link_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-robux-mod_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/roblox-demon_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/real-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-play-online-free_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-robux-without-doing-anything_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_off000047f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47F3 29868 bytes
SHA-256: b0d9fa0c6708dbe4af17d035739a483c163ba487d3063adaed1a380fdefbc74c
font_01_sfnt_off00008d22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D22 18220 bytes
SHA-256: d4b8e24526bb3abbea9f0568b0d8f140a2078d8496f55c5b0be55e4bb875d99b

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