Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c401a46597afb3a…

MALICIOUS

PDF

44.1 KB Created: 2021-05-15 14:31:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 93cd34000e6fc05b927065cb6a8787ee SHA-1: 72439d43898bfc59155d421ca4a21d6b008136aa SHA-256: 8c401a46597afb3ad351c20b74c5a11aa8c367c7a0c89045e7d4422ffc3cbb54
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting "game hacks" and "free spins". The heuristic firings confirm these links lead to known malicious redirectors. While no scripts were extracted, the document's structure and embedded URLs strongly indicate a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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.xyz/app/406889139/coin-master-free-daily-spins-and-coins-game-hack In PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/roblox-data-breach_GM431946152.pdfIn PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/free-robux-download_GM431946152.pdfIn PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.min3madiun.sch.id/__statics/gudangsoal/files/give-me-robux-now_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
stream_003_off00004e1c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E1C 27012 bytes
SHA-256: 18a861c380c49d03701f1cc8bd62cb504cf745226234e03e347f36c2e60aa5f2
font_01_sfnt_off000089b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89B1 18480 bytes
SHA-256: 88c5a76ee56cb7e28b06cf9e90949f5a0fd4a72b6dddac6cb3c8c84aebf5620b

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