Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e3181781ba28f6b…

MALICIOUS

PDF

35.9 KB Created: 2021-07-04 10:24:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9a51ceab8a034865c1f0ede4419ebdd2 SHA-1: bc7899a4d29f93cf13fac3c94b1509c23c5dcdb7 SHA-256: 0e3181781ba28f6bc033c2f5b8cf6b6c88a3e83decf9af376e8dafa1e2489cad
160 Risk Score

Malware Insights

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

This PDF document employs a lure of free game currency and hacks to entice users to click on embedded links. The primary link directs to a known malicious redirector infrastructure, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious workflow designed to lead users to potentially harmful content.

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/free-spins-coin-master-unlimited-game-hack In PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/coin-master-cards_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/free-gifts-right-now-roblox-offical-fuzion_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/how-to-hack-roblox-2021-robux_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/how-to-get-robux-instantly-for-free_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/codes-for-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/6-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/free-apk-mod-coin-master_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/roblox-images_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/free-100-robux_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/roblox-source_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/coin-master-mod_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/roblox-g_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.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_002_off000032da.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32DA 23412 bytes
SHA-256: 931099e709fe6b10805975d298dae26683eac56d7af74dbb073fe75e39ead4be
font_01_sfnt_off00006803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6803 18868 bytes
SHA-256: 2ae514214ba8136a29dde69fcf4364d8dbb9380ba0bdd85285d9bbc1786d9168

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