Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5bfc5b5bc4f09ea…

MALICIOUS

PDF

43.7 KB Created: 2021-05-15 16:35:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9d06d514b94a71a4cfd98661a6f713a7 SHA-1: 76fe54c8f4b8728a2f754054db0b41d103f58360 SHA-256: b5bfc5b5bc4f09ea7f1080afc3327e3c074f4ce1d943489b0b134a52666f0c2d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and hosts further malicious PDF files, masquerading as game hacks and free downloads. The document body and embedded URLs strongly suggest a phishing lure for potentially unwanted software or further malware. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-hack-mod-game-download-game-hack In PDF document text
    • http://alexanderautos.co/images/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • http://alexanderautos.co/images/coin-mster-free_GM406889139.pdfIn PDF document text
    • http://alexanderautos.co/images/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://alexanderautos.co/images/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://alexanderautos.co/images/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • http://alexanderautos.co/images/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://alexanderautos.co/images/coin-master-admin-free-spins_GM406889139.pdfIn PDF document text
    • http://alexanderautos.co/images/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://alexanderautos.co/images/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • http://alexanderautos.co/images/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://alexanderautos.co/images/how-to-hack-coin-master-game-without-root_GM406889139.pdfIn PDF document text
    • http://alexanderautos.co/images/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://alexanderautos.co/images/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://alexanderautos.co/images/minecraft-free-education_GM479516143.pdfIn PDF document text
    • http://alexanderautos.co/images/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://alexanderautos.co/images/coin-master-online-hack_GM406889139.pdfIn PDF document text
    • http://alexanderautos.co/images/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
    • http://alexanderautos.co/images/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://alexanderautos.co/images/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://alexanderautos.co/images/how-to-get-daily-free-spins-on-coin-master_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
stream_003_off00004f40.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F40 24640 bytes
SHA-256: 595b4ad04daec6ed666bf4e9c047d447c2595e23c7956c33089f3a2395df4aaa
font_01_sfnt_off000087b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B5 18556 bytes
SHA-256: 6ae4edda5b33261e183c1fbe66246d10fbe6e53c76ae39713cb0d7eff25940de

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