Malicious PDF — malware analysis report

Static analysis result for SHA-256 d85957e117c173bc…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 23:37:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f5203a456597c46fe10d2fac918b119a SHA-1: 6b1578cddc8175a8c7584be7f858757e4e14a4b1 SHA-256: d85957e117c173bc7809aa59f6c6762e34082a251c6c1aab994519ed51996d00
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to known malicious infrastructure, specifically advertising 'free generators' or 'game hacks'. The primary lure URL is http://netcdn.tw/app/479516143/minecraft-font-free-game-hack. While no scripts were extracted, the presence of malicious redirectors and the lure suggest an attempt to lead the user to a phishing or malware download site, likely delivered via spearphishing.

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/479516143/minecraft-font-free-game-hack In PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/free-roblox-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/robux-xyz_GM431946152.pdfIn PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/114-4-hacks_GM479516143.pdfIn PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/aimbot-hack-for-roblox-cbro_GM431946152.pdfIn PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/roblox-hack-v7_GM431946152.pdfIn PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/free-robux-gift-card-codes-pastebin_GM431946152.pdfIn PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/easy-ways-to-get-free-robux_GM431946152.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
font_00_sfnt_off000032ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32EC 22680 bytes
SHA-256: 9d5a2bb9f7cf70f90a540e3d5c72607654727543be0a225c22dc162b96f1d138
font_01_sfnt_off000065a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A6 17996 bytes
SHA-256: 1349cd4e0d557016c08a9b992d3688fa2f7b3c2a17b956817b71236e999620b9

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