Malicious PDF — malware analysis report

Static analysis result for SHA-256 44859f024daefa6a…

MALICIOUS

PDF

38.8 KB Created: 2021-05-19 09:37:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9c8da1d484698cdbe68ea06b056ea5df SHA-1: 4b3fad08d6d358b0f0b3a358f50cd7e69708d4e3 SHA-256: 44859f024daefa6ac1c001c181db33cc555fe18a9c1198ba3aaab31ad207f8fa
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link to a known malicious redirector infrastructure, disguised as a download for a Minecraft hack client. This indicates a phishing attempt to trick users into downloading potentially harmful software. No scripts were extracted, but the presence of a malicious URL and a 'download button' heuristic strongly suggests a malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0127

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/479516143/minecraft-hack-client-1.8-9-game-hack In 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
font_00_sfnt_off0000351b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x351B 24668 bytes
SHA-256: 89cb68ab1a4972afe8fcca1ec18b60ab7f37cc98ebefd133ae6d73552a9cf2f8
font_01_sfnt_off00006c2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2C 2820 bytes
SHA-256: 96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689
font_02_sfnt_off000075cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75CD 18356 bytes
SHA-256: 7146a4451d5a4af0805248e1a25bf748bd62d3cefbd8f089093f6989f2885b31