Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbea1444b701df5c…

MALICIOUS

PDF

34.1 KB Created: 2021-06-18 03:52:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5db08a74a983b793454245cf2f00e24e SHA-1: 2d2667a3db5f5fcda387e50397775f727363279a SHA-256: cbea1444b701df5c99203e6152d441d635fb52e494f35ae99ddffd3cdbd1145f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a game hack redirect lure, pointing to known malicious infrastructure. The document body explicitly contains the malicious URL, reinforcing the lure. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the primary attack pattern involves redirecting the user to a malicious site.

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/how-to-hack-sword-fight-on-the-heights-on-roblox-game-hack In PDF document text
    • http://library.imz.or.id/repository/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-vip-roblox_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-hack-apk-ios_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/wurst-115_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/pokemon-go-free-legendary-hack_GM1094591345.pdfIn PDF document text
    • http://library.imz.or.id/repository/get-2021-free-spins-on-coin-master_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_off00002fcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCD 21492 bytes
SHA-256: e4bd36f2d55543451a847b1e9ad45ba39a1d461ddee980d84fab0e539eaba78b
font_01_sfnt_off00005ed3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED3 19548 bytes
SHA-256: 87633aa5cb7d77ead811a47c01d0d878a1d88054aaa3ae921388c1eb3f56c374

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