Malicious PDF — malware analysis report

Static analysis result for SHA-256 c057a07457e1369b…

MALICIOUS

PDF

33.7 KB Created: 2021-07-03 21:28:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 569f1d42b8f7c89208365af5204d74cc SHA-1: f7f2c1dc976f70960b9aaf8ac1e3e2e81593bb9e SHA-256: c057a07457e1369b4765864098ac4ce216fc1090411abc4126ff3bf60c5a715b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and generators, such as 'codes-how-to-get-free-robux-game-hack'. This pattern is indicative of a phishing or malware distribution lure, aiming to trick users into visiting potentially malicious sites. The ML classifier strongly supports the malicious nature of this PDF.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/codes-how-to-get-free-robux-game-hack PDF link annotation
    • http://global-brand.net/userfiles/files/coin-master-daily-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/roblox-games-for-free-unblocked_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/followers-generator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-spins-coin-master-android_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-robux-master_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-hack-roblox-for-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-free-stuff_GM406889139.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_off00002ed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED0 21732 bytes
SHA-256: 84a566295214941e7d91315ac46d88b53eb211e5dfced1d4d23eb6d1256772e8
font_01_sfnt_off00005e48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E48 19156 bytes
SHA-256: 1abe1f888ea44a86c9f7894949bd06bee09219bb3a2585bcc6d0e8e487c16c49

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