Malicious PDF — malware analysis report

Static analysis result for SHA-256 4224fc1c36d06840…

MALICIOUS

PDF

28.5 KB Created: 2021-05-10 18:34:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b6512184e62b2135b348ae627cb928b2 SHA-1: 07c0a0b7519738aa614ca875508b9e3ca3a531be SHA-256: 4224fc1c36d06840a0d17d5f68efd5748b453d4a44827ae3098dc3f9ff8c742f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document employs a common lure of offering game hacks and free currency for popular games like Roblox and Coin Master. It contains multiple embedded URLs that lead to redirectors and potentially malicious download sites, such as the primary redirector at https://netcdn.xyz/app/431946152/roblox-hacks-com-game-hack. The document body and heuristics confirm the intent to trick users into visiting these sites, likely to deliver malware or engage in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9747

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/431946152/roblox-hacks-com-game-hack In PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/rbxdemon_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/june-29-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/getrobux-come_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/how-to-hack-to-get-robux_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
font_00_sfnt_off000021d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21D1 19852 bytes
SHA-256: 9cebbaf5dd341a2217587a582dd97968e9e389eb7e2bba490bd8d688f5166b89
font_01_sfnt_off00004bf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BF3 18440 bytes
SHA-256: 1a583cd050f8f98e2431c615d76cb557f5db8d78fe9a055893f9d58d3dd3bb04

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