Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6ca07a6d366aa65…

MALICIOUS

PDF

35.3 KB Created: 2021-05-22 12:39:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 367854345fe58626263e4c13acae0759 SHA-1: b5066baea4c0f45730737a01705d0a8d9f8d5863 SHA-256: b6ca07a6d366aa65419c31d76b2efbc0a9ede5c9794257c692368ab565992678
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, specifically promoting 'free generators' or 'game hacks' for popular games. The document body and heuristics indicate a lure to download or access these purported generators, which likely leads to malware or further malicious redirects. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/479516143/minecraft-hacked-client-game-hack In PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/links-to-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/get-free-robux-no-verification_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
font_00_sfnt_off00003305.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3305 23976 bytes
SHA-256: 225a9fa0de1882331f9541b2cb50c5a3ac888119f8a7f423b7098f157570db91
font_01_sfnt_off000069b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B3 17988 bytes
SHA-256: 60084e38a3b13cc374d8b54708ec2a3852040562095209170bda5240b53bf335

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