Malicious PDF — malware analysis report

Static analysis result for SHA-256 f778c8f495006ca1…

MALICIOUS

PDF

32.6 KB Created: 2021-07-19 08:35:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1b13e97a68a04982976419972e0c143c SHA-1: ab9b561f2eab5c078f8fbbf39105a9a43c7557ec SHA-256: f778c8f495006ca1ce4c5162cdb4af2462f0b7b71765fca71b97e24561e45111
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/406889139/free-coin-coin-master-game-hack PDF link annotation
    • http://www.visiblefilm.com/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://www.visiblefilm.com/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.visiblefilm.com/images/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://www.visiblefilm.com/images/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://www.visiblefilm.com/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://www.visiblefilm.com/images/free-tiktok-likes-no-survey_GM835599320.pdfIn PDF document text
    • http://www.visiblefilm.com/images/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://www.visiblefilm.com/images/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://www.visiblefilm.com/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.visiblefilm.com/images/real-minecraft-for-free_GM479516143.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_off00002b8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B8C 22932 bytes
SHA-256: 27aadc8b0bbe5034b1eaae9431dd4029e41659d3e6b1fcda4a99257d8c4e17fd
font_01_sfnt_off00005f12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F12 17712 bytes
SHA-256: effefb876c7a76aa063811ff0160e46fb8a90dd5507c6c48ef6fa39823ab5c8c

Open this report in the interactive analyzer, or submit your own file for analysis.