Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd209d4d28c71122…

MALICIOUS

PDF

38.3 KB Created: 2021-05-10 12:07:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6e4423577f3d766c75034e9e1f657123 SHA-1: 5bebaf66354adc6d9a47471a191a488f50aad2d1 SHA-256: cd209d4d28c71122d7ad905fb6550f04fef28530c40c8718dfd26dcda1cee3e9
130 Risk Score

Malware Insights

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

The PDF document contains multiple links to a known malicious redirector, specifically advertising a 'Coin Master Free Spin Whatsapp Group' and 'Coin Master Generator'. These links are designed to lure users into clicking, likely leading to the download of a second-stage payload. The presence of a download button lure further supports this malicious workflow.

Machine Learning

  • Nyx PDF Classifier clean score 0.0130

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-spin-whatsapp-group-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003080.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3080 24920 bytes
SHA-256: d415ffd55a905cb38d73f232bc973b3516e1e24b3299a1cf832fd4b9641557ea
font_01_sfnt_off00006a2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2F 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000073e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73E1 18392 bytes
SHA-256: 60a6361e6fc3388894d0b11e150a687c52e9f5db442fe66c80805b9ea3a4dad4

Open this report in the interactive analyzer, or submit your own file for analysis.