Malicious PDF — malware analysis report

Static analysis result for SHA-256 41d8abfd8eeda2f1…

MALICIOUS

PDF

45.8 KB Created: 2021-06-09 02:14:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 001fd038e5d49d3ba91f2f9937306c4c SHA-1: 6b2722f4523622246ce48998212f495123e54455 SHA-256: 41d8abfd8eeda2f186a4a52fa30bd2885690d74b5ed312552f247424793d523b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, directing users to a malicious redirector URL. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/this-you-cna-do-with-cheat-engine-on-roblox-game-hack In PDF document text
    • http://library-fkip.uho.ac.id/repository/pubg-uc-official-center_GM1330123889.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/roblox-free-login_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/tiktok-viewer-free_GM835599320.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/john-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051ed.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51ED 25308 bytes
SHA-256: 118ef72e9ae94659e4497edce40a4e3dbbd06cf57c72762bec2621989e384a2e
font_01_sfnt_off00008d03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D03 19356 bytes
SHA-256: 9e392b4bdddd88e6691be1db54f2670cd860466a95d6157aa87a2c13244d9c56

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