Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0cdedba8ea0947c…

MALICIOUS

PDF

47.6 KB Created: 2020-08-31 03:43:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 065df06754a3184f241cd45335024799 SHA-1: 24289659ef924ba3c92b0b49b16a9d7b3d6e74ea SHA-256: d0cdedba8ea0947cf8e1e013fd2095045aa576f5d9ac6077b14fb9d85dc6fca7
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a redirector URL. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that one of these links leads to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic further suggests a deliberate attempt to create a link farm. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves luring users to click on these links, which likely leads to further malicious activity.

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=instalaciones+en+los+edificios
    • https://static.usrfiles.com/ugd/0ebc1f_6a01b5a03b8146e88678dd83737a3f1f.pdf
    • https://static.usrfiles.com/ugd/6cf392_bb5dc05b36c6470db6d99c2175ed5474.pdf
    • https://static.usrfiles.com/ugd/b8c837_ebfe681d14104cfcb63376cf6af5e807.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_5bf116087e1c4667992894c21f74698e.pdf
    • https://static.usrfiles.com/ugd/b8c837_e1b9eaafee024ac588beca8e65b2ae98.pdf
    • https://static.usrfiles.com/ugd/5ed537_1299c45a038c4999a46565ef2ec48797.pdf
    • https://static.usrfiles.com/ugd/b8c837_032545bc579f4844a2adcab88841ae67.pdf
    • https://static.usrfiles.com/ugd/67e251_94ba11a2cec4452f803039fb9168b30b.pdf
    • https://static.usrfiles.com/ugd/c0b427_bf0f0900240645c5acd0e2b3fa66c310.pdf
    • https://static.usrfiles.com/ugd/a4e402_7ddc6b5bef9d420d90116a17d50040d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_e3b43b291c5e40c28f94e13b21089103.pdf
    • https://cdn.shopify.com/s/files/1/0430/9306/5881/files/it_inventory_template_xls.pdf
    • https://cdn.shopify.com/s/files/1/0437/2224/4264/files/la_bella_durmiente_historia_original.pdf
    • https://cdn.shopify.com/s/files/1/0438/9660/2779/files/50781210925.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/31882444544.pdf
    • https://cdn.shopify.com/s/files/1/0432/6876/7907/files/sinopamet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fd6.bin
06dcc5d95779497aaa19c2ba3e689d572340f0ccafa348477a85809b0051d1c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD6 4644 bytes
font_01_sfnt_off00007f98.bin
d9e09040b558564a807d689e1e3af4029f57b2476e8dee33665fa426063a25d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F98 11012 bytes
font_02_sfnt_off0000a3a8.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3A8 4324 bytes