Malicious PDF — malware analysis report

Static analysis result for SHA-256 d44d04c231dcdfcb…

MALICIOUS

PDF

52.0 KB Created: 2021-06-03 05:00:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 025992b2ead7107fb62ff609c9cd5b3d SHA-1: 249575bc1bfc94ec91da2d3c90941f1fc1ddc849 SHA-256: d44d04c231dcdfcb8c1bef87ad3ecb4431e58d3b24b730226947723a31394a54
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to known malicious redirectors, disguised as "free generator / game hack" lures. The primary malicious URL identified is https://netcdn.online/app/431946152/song-id-for-free-money-cardi-b-roblox-game-hack. The document's structure and embedded links strongly suggest it is designed to trick users into visiting these sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9464

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.online/app/431946152/song-id-for-free-money-cardi-b-roblox-game-hack In PDF document text
    • https://lib.stie-yai.ac.id/repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5427 33848 bytes
SHA-256: f04bc41456ae80ddde36e1098b762c01a4116030ab84fddc27a7b7ebf3ec02be
font_01_sfnt_off00009c73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C73 2940 bytes
SHA-256: ae8acc7f13e86db3aed98d7dfb73e70e16f4dedb45e9f0467460b76f54e1a1bb
font_02_sfnt_off0000a681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA681 19132 bytes
SHA-256: cddc0fdca22f329a0fb8641b6ea824b83fad129961ecdf56e197b300f4abd626

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