Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f76ee9594ce87b4…

MALICIOUS

PDF

44.3 KB Created: 2021-05-18 00:51:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 0ad4c84429b560b2599a623bdfae076c SHA-1: 5db6cbe3a0a4a97d61ca4ef55233e48b951e8bfe SHA-256: 6f76ee9594ce87b49ae5a3fb25d6a958cde6161609c58e64faec9da2e690f9cd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple links to known malicious redirectors, masquerading as game hacks and free generators. The primary lure directs users to a URL associated with malicious infrastructure, likely to download further malware or redirect to phishing sites. No scripts were extracted, but the embedded URLs and heuristic firings strongly indicate a malicious redirection attempt.

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 https://netcdn.xyz/app/406889139/coin-master-free-spin-and-trading-group-game-hack In PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/roblox-moderators_GM431946152.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/robuxglobalcom_GM431946152.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://multiconfianca.com.br/ckfinder/userfiles/files/free-robux-on-iphone_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_off00004f7d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F7D 25416 bytes
SHA-256: 7677522ebeda91d59b7b3c0517384e88acf48ac6d013245bc94cdc011bc91202
font_01_sfnt_off00008a50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A50 18488 bytes
SHA-256: ce32e08b5302944e5b9e6b229062fe325a28013d564ee3f5b8458993eb3ca1e1

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