Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b11a7ebc2bca4e2…

MALICIOUS

PDF

38.9 KB Created: 2021-05-21 05:40:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3e22a6ffef6a8a5eebc0ac3341871a3e SHA-1: ac22a56be359d545b6b498b325b959b20706df20 SHA-256: 6b11a7ebc2bca4e243feefe8aa027dd422a030d268bd5e85cba40ada2c81e416
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including a known malicious redirector, disguised as 'game hacks' and 'free generators'. The heuristic firings confirm the malicious redirector and a lure for game hacks. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to malicious content, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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-spin-today-game-hack In PDF document text
    • http://artistaone.co/userfiles/files/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003213.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3213 24944 bytes
SHA-256: a6faef0783be32de8d88e3811421853ef46f4db4de6cb89018b9be90320d2aae
font_01_sfnt_off00006b88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B88 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off000076b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B2 18240 bytes
SHA-256: a96ac7afd25cadbabafd1b9dbf0a180d0c1833ed2d07acb4363f122556c39d20

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