Malicious PDF — malware analysis report

Static analysis result for SHA-256 3887a8a01e2bdfe4…

MALICIOUS

PDF

38.5 KB Created: 2021-05-21 03:21:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 05a196bde028663d30c82ac60170e5cf SHA-1: d4c338c415a80db81732233759c39ad80135a511 SHA-256: 3887a8a01e2bdfe473eb78b18318aa8d243b6a299560a1c1fbd85c37572aea93
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generators' and 'game hacks' for popular games like Roblox. The document body explicitly contains a call to action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR', further reinforcing the lure. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent.

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/431946152/free-roblox-hair-girl-game-hack In PDF document text
    • http://eurocomes.com/images/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/roblox-rewards_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.roblox.coIn 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_off0000341e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x341E 23940 bytes
SHA-256: 31e1d957d55627552868a7d84253e2c8ff32dfd707388b835d5da2492f6e0095
font_01_sfnt_off00006aec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEC 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000074d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74D7 18296 bytes
SHA-256: 6d108897347ac398a283a2bff54a73132a19f0ebf91f3138fdca41a09adbfe1f

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