Malicious PDF — malware analysis report

Static analysis result for SHA-256 441ef281edeba848…

MALICIOUS

PDF

33.3 KB Created: 2021-07-05 21:19:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 89732084c62dd5f2e0571422a2dcf35b SHA-1: be93812e358d51375d443b80299fd3b1bedfff6d SHA-256: 441ef281edeba848676ecb34212e4da3c385bdbf0c550dc638f217548a8ea6fd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appear to be game hack generators or free currency sites. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The document body and heuristics confirm the malicious redirection and lure-based attack pattern.

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.tw/app/406889139/hack-coin-master-ios-game-hack In PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/roblox-jailbreak-speed-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-robux-boost-com_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-hack-roblox-account-with-inspect-element_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/real-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/como-tener-robux-gratis-en-roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/tiktok-viewer-free_GM835599320.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/cheats-roblox-vip_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-roblox-clothing-group_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/robux-hack-free-nothing-else-you-have-to-do_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/roblox-hack-script-animations_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-free-spins-2021-generator_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-minecraft-account-reddit_GM479516143.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/barren-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/what-happens-if-you-go-on-a-free-robux-website_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/generate-robux-for-free_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_off00002e8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E8F 22416 bytes
SHA-256: e16b70e84cfe7612568e6f325f64e0a7336e57e86406c002b6ecf117820bd8da
font_01_sfnt_off00006041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6041 18004 bytes
SHA-256: 4c5d9a824de2dea5cf38432e93a74275512ca3d1de6f9bfc3d674cd23e8e42bc

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