Malicious PDF — malware analysis report

Static analysis result for SHA-256 6972528b4186507d…

MALICIOUS

PDF

35.5 KB Created: 2021-05-24 21:40:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bc5c6ec6de3ba3ba1f20074d0fd55615 SHA-1: e0adac26550adf9d27e6d9911f764b7c19641dca SHA-256: 6972528b4186507d809f9604e9ec2a902ca8432448b35844a0b65a3824d0bdbd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure, promising free in-game currency or hacks to entice users. It contains multiple embedded URLs that redirect to malicious infrastructure, specifically designed to host further lures and potentially malicious files. The ML classifier also flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9508

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/free-spins-coins-coin-master-game-hack In PDF document text
    • http://cornerstonedurham.com/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://cornerstonedurham.com/images/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • http://cornerstonedurham.com/images/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://cornerstonedurham.com/images/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://cornerstonedurham.com/images/free-unlimited-robux_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
stream_002_off000032a5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32A5 25296 bytes
SHA-256: 3bfbf04c0e4bb738b2ae0b6506376035da3d252a4f9d9334632486d17e34650d
font_01_sfnt_off00006a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A76 17884 bytes
SHA-256: 18816d8d761583b578c9833b8849e2eeaed27ef2f16a893d2032c58e3f8148b6

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