Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d0e19df750e2ac…

MALICIOUS

PDF

35.8 KB Created: 2021-05-22 03:09:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cd8c8725b1a1d250a6d0f83b12b54541 SHA-1: a2852b48e07d7cf8d3f42eec485ca04e3f33b2f3 SHA-256: 09d0e19df750e2ac2b85ff7e182ee7f1caa8d854c5a91e051add0782d70f5f21
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirector infrastructure, specifically promoting a "free generator / game hack" lure. The ML classifier strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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-coin-master-spins-game-hack In PDF document text
    • http://www.notaioricci.it/images/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://www.notaioricci.it/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/free-roblox-gfx_GM431946152.pdfIn PDF document text
    • http://www.notaioricci.it/images/free-spins-for-coin-master-that-work_GM406889139.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
font_00_sfnt_off0000324a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x324A 25516 bytes
SHA-256: b3c11930bc41d7d666c3d82ab52f4c78c2b0521ef0c8b5ba82c2f2b45639526f
font_01_sfnt_off00006bae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAE 17884 bytes
SHA-256: dbba0adc3b1b7bb8b2e5e51fec5d28ab169e2f7a165ed2a14d616932af559aea

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