Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6eb61b9f34c5362…

MALICIOUS

PDF

37.5 KB Created: 2021-05-23 07:07:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 74ba0179e02c5ee07286a82a0d9b06e3 SHA-1: d5cb9cd9f596ab830a61391d20d3d923a972b671 SHA-256: d6eb61b9f34c53624843bc69684f89d68e120513591f9b442218e0304ccff5eb
100 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded links suggest a lure related to hacking accounts or obtaining free in-game currency, which is a common social engineering tactic. The ML classifier also flagged the document as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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://batutynas.lt/images/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://batutynas.lt/images/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://batutynas.lt/images/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • https://batutynas.lt/images/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://batutynas.lt/images/what-is-robux_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_off00003343.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3343 26316 bytes
SHA-256: 3d15d50a5c6d3c8265a8a2684bdace192fa0d52cbc1f95398277c0e76e88ce02
font_01_sfnt_off00006f20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F20 18912 bytes
SHA-256: 995056b981027bfba3f97be2499ebace8b386febdb07856c531761fbe005e83e

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