Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4dd5b97b2a642da…

MALICIOUS

PDF

36.0 KB Created: 2021-06-24 16:58:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b3797bf6715991a6ffe2f9ddf2762441 SHA-1: a99786f493585b90b86da2a4b409f0c5b13c7000 SHA-256: f4dd5b97b2a642da7000d5498b3ac14493b6f9bc9f9fce863d5adf53c03ee0a2
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 0.9980

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.co/app/431946152/is-there-any-way-to-get-free-robux-game-hack PDF link annotation
    • https://www.advancissurgical.com/uploads/files/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/dress-up-on-roblox-that-are-no-roblox-just-free_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/best-site-for-free-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-no-hack-or-human-verification_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-free-link-daily_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-robux-card-hack_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/google-how-do-you-get-robux_GM431946152.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
stream_002_off000033bb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33BB 22824 bytes
SHA-256: ff2e3fb819deb2bb598a0e8226dc71ba23128648aec759b55a8aa3ce02396bee
font_01_sfnt_off000066ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FF 19364 bytes
SHA-256: 80b6394bfb37edc2ea14afbfa24f605699f6492fbe141c801abd30e44507c20a

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