Malicious PDF — malware analysis report

Static analysis result for SHA-256 1915344a19fed7e9…

MALICIOUS

PDF

34.1 KB Created: 2021-07-04 01:39:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ea6c78ecae2ea74bad0cef83e6924e57 SHA-1: 383d1f421e2b48267993af754ca5ed3806aa6407 SHA-256: 1915344a19fed7e939d789206a226d92ad4dfaf0ad17cfacb0f6b1506c844988
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.tw/app/431946152/free-2021-robux-game-hack PDF link annotation
    • https://maximabm.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • https://www.maximabm.com/uploaded_files/userfiles/files/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://maximabm.com/uploaded_files/userfiles/files/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://www.maximabm.com/uploaded_files/userfiles/files/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • https://www.maximabm.com/uploaded_files/userfiles/files/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • https://maximabm.com/uploaded_files/userfiles/files/free-premote-group-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.maximabm.com/uploaded_files/userfiles/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://maximabm.com/uploaded_files/userfiles/files/roblox-hacker-t-shirt_GM431946152.pdfIn PDF document text
    • https://www.maximabm.com/uploaded_files/userfiles/files/how-to-hack-into-someones-roblox_GM431946152.pdfIn PDF document text
    • https://maximabm.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-hacks-gliches-or-troll_GM431946152.pdfIn PDF document text
    • https://www.maximabm.com/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://maximabm.com/uploaded_files/userfiles/files/cheat-roblox-diamond_GM431946152.pdfIn PDF document text
    • https://maximabm.com/uploaded_files/userfiles/files/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://maximabm.com/uploaded_files/userfiles/files/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://maximabm.com/uploaded_files/userfiles/files/clothes-for-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.maximabm.com/uploaded_files/userfiles/files/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • https://maximabm.com/uploaded_files/userfiles/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://maximabm.com/uploaded_files/userfiles/files/roblox-flight-hack-download_GM431946152.pdfIn PDF document text
    • https://maximabm.com/uploaded_files/userfiles/files/roblox-booga-booga-mojo-update-hack_GM431946152.pdfIn PDF document text
    • https://www.maximabm.com/uploaded_files/userfiles/files/minecraft-pvp-hacks_GM479516143.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_off00002f2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F2B 22188 bytes
SHA-256: e49cb7f976e5fa3ed5e8993574def84f10da63e668c426a447affae81e51f9b3
font_01_sfnt_off00006010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6010 19116 bytes
SHA-256: af14d1fa5b4f919e14fbfd2207fee29f86c7e1258ad11836ead4aea48baef512

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