Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7593fb0d2423e38…

MALICIOUS

PDF

42.3 KB Created: 2021-05-16 21:18:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a415ad5abd3e2a676ae7a08a2211598b SHA-1: da662beadb7baafa6a9216c8e1c4807af41c426a SHA-256: a7593fb0d2423e38e89f33faea36b6b0530d7ed1600e584fe951015832da7c39
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are identified as malicious redirectors, specifically luring users with "game hack" and "free spins" content. The document body and embedded links strongly suggest a social engineering tactic to drive traffic to potentially malicious sites, likely for malware distribution or phishing. No scripts were extracted, limiting the analysis of direct execution capabilities within the PDF itself.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-spins-daily-game-hack In PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-free-spins-link-download-free_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/free-800-robux_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/roblox-pink-free-robux_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_off00004847.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4847 25816 bytes
SHA-256: 8da55b9a3347a0e532309c6c68a46606f27f35c6c1c4a37cf38670e21fa88cb6
font_01_sfnt_off000082bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82BD 18308 bytes
SHA-256: 220bb6194b1ab8a2bb399ca4a862914ac8d15b354bb0df2c737bc67699221dc9

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