Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a9d387db4f887e7…

MALICIOUS

PDF

43.5 KB Created: 2021-05-14 12:02:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7d5ef52d3da1e1f96908ad6a4f51fc0e SHA-1: 9746e18ca5ad1664c870e8e23481e75ebdb4bcbd SHA-256: 0a9d387db4f887e764ae1cbfcf9319ad727ddc7cf5b57968654396064bbc8ba7
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 0.9969

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/free-robux-sites-that-work-game-hack PDF link annotation
    • http://goosesscuba.com/images/master-coins-free_GM406889139.pdfIn PDF document text
    • http://goosesscuba.com/images/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://goosesscuba.com/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://goosesscuba.com/images/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://goosesscuba.com/images/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://goosesscuba.com/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • http://goosesscuba.com/images/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://goosesscuba.com/images/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://goosesscuba.com/images/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://goosesscuba.com/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://goosesscuba.com/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://goosesscuba.com/images/abd-roblox_GM431946152.pdfIn PDF document text
    • http://goosesscuba.com/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://goosesscuba.com/images/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://goosesscuba.com/images/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://goosesscuba.com/images/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://goosesscuba.com/images/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://goosesscuba.com/images/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • http://goosesscuba.com/images/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://goosesscuba.com/images/roblox-free-followers_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
stream_003_off000046f2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46F2 27572 bytes
SHA-256: 51d42b15b8d7e0644ac85881b5bdec56d7adf37a8780b5334524dccb02693105
font_01_sfnt_off0000856e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x856E 19000 bytes
SHA-256: c0bc6bb0706fab35ff455fc4816471a1ab7f6ae4486f691ef98043b3efa3f18d

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