Malicious PDF — malware analysis report

Static analysis result for SHA-256 611504d1cc84f1ea…

MALICIOUS

PDF

33.8 KB Created: 2021-06-18 12:22:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: eb19130b9e44cc0d34fb8410a33b36bd SHA-1: 68497d323b0f98daab5e794a5f8d647d82a41cd2 SHA-256: 611504d1cc84f1ea2222fdd56c8e1f40e5789abaa5dce94455b60176303aa386
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple links to known malicious redirector infrastructure, specifically advertising 'free generators' and 'game hacks' for popular games like Roblox and Coin Master. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to lure users to malicious sites. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/free-roblox-birthday-party-game-hack In PDF document text
    • http://lib.kunci.or.id/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/pokemon-go-free-999_GM1094591345.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/chaosity-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/roblox-cheat-engine-work-at-a-pizza-place_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/pubg-uc-transfer_GM1330123889.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-free-link-spin_GM406889139.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_off00002e63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E63 21552 bytes
SHA-256: ffcaaa614eecca9f188e20be44b7a4636b29b12cd492ed963dedc0242d6d7350
font_01_sfnt_off00005d8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D8A 19548 bytes
SHA-256: 0e137bc2222f7b58bc1b4c308e1c66fe83c2de13bcf50406dbd4720f99e9cb9a

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