Malicious PDF — malware analysis report

Static analysis result for SHA-256 536b17ebb393a5b0…

MALICIOUS

PDF

35.7 KB Created: 2021-05-22 13:07:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 73f3752b7cb38c40ea1bbda68978e0a6 SHA-1: 443ffaf1c5c4e785d18096e96395e83d3d37e965 SHA-256: 536b17ebb393a5b076539633cfd628f63d612035722c17633157416d8c3b5790
160 Risk Score

Malware Insights

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

The PDF contains multiple embedded links that redirect to malicious infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and heuristics suggest a lure related to 'free spins' or 'game hacks', which is a common social engineering tactic. The presence of multiple redirector links indicates a high likelihood of this document being used to distribute malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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-coin-master-2021-game-hack In PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/buy-robux-free_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_002_off00003174.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3174 24724 bytes
SHA-256: 0d93eed3e72b7a0aaff47b970e86de659034ff98e9726aa4c2e75502958e7231
font_01_sfnt_off00006a31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A31 18288 bytes
SHA-256: 9732707b45c862b7a6ef8ea2418900def9be3650c6b325207d932644f64622ad

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