Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8b7d3e47cbc8df…

MALICIOUS

PDF

33.1 KB Created: 2021-05-10 21:00:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e2f9f181e183e8d73f1c22e26593d98a SHA-1: 4c81b1806b160179d7b7f728707d9ef8047ae445 SHA-256: aa8b7d3e47cbc8dfae33ea317bb23f1a7cd13d3b1a6396491d4bf4530a7b7124
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the embedded URLs and the nature of the lures suggest an attempt to drive users to potentially malicious websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 3

  • 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.
  • 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-coins-and-spins-coin-master-game-hack In PDF document text
    • http://gomelavto.by/images/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://gomelavto.by/images/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • http://gomelavto.by/images/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • http://gomelavto.by/images/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/roblox-generator_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://gomelavto.by/images/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/best-tricks-co-robux_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-hack-tool-v1-9-download-free_GM406889139.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a2f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A2F 24648 bytes
SHA-256: cf0fc41f7eaaa3d65c5572f884cf38db292be381c77846ed98c95abf3b1bb2b0

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