Malicious PDF — malware analysis report

Static analysis result for SHA-256 34327d74cebbc9d5…

MALICIOUS

PDF

39.2 KB Created: 2021-05-25 10:01:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c909e5cfa37e1b91ad160d26573c9cc8 SHA-1: 4e5c86e8335a562660663a01cbacd422085e7b9f SHA-256: 34327d74cebbc9d5758216f64cb6e07e2cc106c18cf6fd2b3c0c917ad07a4080
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded links and text that lure the user to click on a URL, specifically mentioning "how to hack someone's account on Roblox" and "free robux". The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms that one of the target URLs is associated with malicious redirector infrastructure. The ML classifier also flagged the PDF as malicious. The document body, though partially corrupted, contains references to game hacks and generators, reinforcing the phishing or malware delivery intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

Heuristics 3

  • 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/how-to-hack-someone In PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/pokemon-go-free-play-online-without-downloading_GM1094591345.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/tiktok-followers-generator-free_GM835599320.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_off00003233.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3233 24988 bytes
SHA-256: efae06de0aea2b1f110b68f36827b8c05b7b503b3750ce50353f582a4579ad72
font_01_sfnt_off00006bc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC5 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000075af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75AF 18912 bytes
SHA-256: 995056b981027bfba3f97be2499ebace8b386febdb07856c531761fbe005e83e

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