Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cce685287ea5128…

MALICIOUS

PDF

35.0 KB Created: 2020-08-29 02:16:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9b1acfc87eabf2ca6e7bf252cde3e7a SHA-1: 3c6f84ca990365d461900c91fa15655bb944bd10 SHA-256: 2cce685287ea5128f9d053b056bebc9a53d3316329148b55f2de0d7fcc5c1168
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm and a direct link to a redirector URL, both disguised with keywords related to free movie streaming. The primary malicious link is https://ttraff.com/wix?keyword=pupille+film+streaming+gratuit, which is designed to lure users to potentially harmful content. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.com/wix?keyword=pupille+film+streaming+gratuit
    • https://static.usrfiles.com/ugd/b8c837_69c078741be64cd1926abb3fb81cc1a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f38b2a135cc4e28abec2c076ae10372.pdf
    • https://static.usrfiles.com/ugd/b8c837_6e7907bb8ad34464a06d44978dde9dd4.pdf
    • https://static.usrfiles.com/ugd/b8c837_496c8eb36ba64e1a8770a0d32e39d74c.pdf
    • https://static.usrfiles.com/ugd/b8c837_41e091a9e74441d1ab7d59b58a3b6bc5.pdf
    • https://static.usrfiles.com/ugd/b8c837_8afe13fc864541279414b3f8f116622f.pdf
    • https://static.usrfiles.com/ugd/b8c837_428b077b14644b6ab0bd1aaf80daee26.pdf
    • https://static.usrfiles.com/ugd/b8c837_c20b638aa6674bffbd0ea5704d0f8d8f.pdf
    • https://static.usrfiles.com/ugd/b8c837_bec52d215bef415bab6634e77357ab05.pdf
    • https://static.usrfiles.com/ugd/b8c837_b82d6f5d1dbb47118c68a5ff1168ab42.pdf
    • https://static.usrfiles.com/ugd/b8c837_9facf98a365a42d4a10c9c7083708c77.pdf
    • https://cdn.shopify.com/s/files/1/0431/1613/4562/files/kojikusiwuvibido.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/twisted_brush_open_studio.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000477e.bin
1b06d82d4cdf0016a20064cebaf652f47a1f8887c15d0d1e001cbffb1d85789c
pdf-font-stream PDF embedded font (sfnt) at offset 0x477E 5224 bytes
font_01_sfnt_off00005924.bin
58f643d2c8fccdbcf7158d8c09a0dc5d7f73673357c4aee7bdb6163ad46c0f8d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5924 11720 bytes