Malicious PDF — malware analysis report

Static analysis result for SHA-256 09c42cf88e101d6a…

MALICIOUS

PDF

36.4 KB Created: 2021-05-22 06:37:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0046fca6b5bbea0629126f0f4f28cd4b SHA-1: 1c0ae2e2ff66b496585f48394ccc884ffa55d6cc SHA-256: 09c42cf88e101d6ac0825a00bdc40b2a034d78d7fc68fabe3c9c8acefbe23730
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The document body and heuristics indicate a lure to download or access these resources. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious redirector chain designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/play-minecraft-online-free-game-hack In PDF document text
    • http://engelum.com/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://engelum.com/images/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
    • http://engelum.com/images/tiktok-free-folowers-4tiktok-site_GM835599320.pdfIn PDF document text
    • http://engelum.com/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://engelum.com/images/free-robux-wheel_GM431946152.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_002_off0000356d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x356D 24736 bytes
SHA-256: c0de353e6de0086f6c1df4ddb2f8a4c0fa1ae0917950cb231e0fde8e2a445778
font_01_sfnt_off00006e3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3A 17976 bytes
SHA-256: e953997c623ab1bd3546e7b188ca680e36d1015a1cf7f46efbbf98890a47325d

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