Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4d57fd5b01de296…

MALICIOUS

PDF

44.2 KB Created: 2020-09-01 22:51:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f0edcf5c3147d5729458f776b67f606 SHA-1: 1318ccf64e2d1d9ecde4c72f1eed2da3f3531536 SHA-256: b4d57fd5b01de2965438f821991194a7c0743c2262af3a79f8d7521f74c2222a
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=video+er+hd+1080p'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one being a Shopify URL. The document body, though heavily obfuscated, contains the same redirector URL, suggesting an attempt to lure users to malicious content under the guise of video streaming.

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=video+er+hd+1080p
    • https://cdn.shopify.com/s/files/1/0437/2171/9959/files/ejemplo_de_cadena_de_suministro_de_coca_cola.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89186344985.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0825/files/penol.pdf
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/jugozegewaluro.pdf
    • https://cdn.shopify.com/s/files/1/0437/1103/7591/files/lg_441g_manual.pdf
    • https://static.usrfiles.com/ugd/ba3095_b11e067e77ce416297ab9a065b51fa21.pdf
    • https://static.usrfiles.com/ugd/b8c837_c6162e7ae99f4d2786f0eabd5d9605a5.pdf
    • https://static.usrfiles.com/ugd/f967ac_b94629ab912b4715834eb4b9dc46c908.pdf
    • https://static.usrfiles.com/ugd/769f78_9cb3e44c940d405f813a0d025c042417.pdf
    • https://static.usrfiles.com/ugd/0dd040_c9f8ba3e4abc4cf7899971859fe93ece.pdf
    • https://cdn.shopify.com/s/files/1/0435/4582/1333/files/wozep.pdf
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/83351818138.pdf
    • https://cdn.shopify.com/s/files/1/0439/4788/4702/files/bozisujopujebafaxodutaput.pdf
    • https://static.usrfiles.com/ugd/b8c837_517b4ec932634a7c88d540facb71d5c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_e28afd06c8264c08865d04d662f7ae40.pdf
    • https://static.usrfiles.com/ugd/e7e4a0_5d66d7ef00ab402c80964b23a9e485c7.pdf
    • https://static.usrfiles.com/ugd/a2d007_32f4508157e84e78b429472f9b9ba1a4.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_off00005b69.bin
3ebb7fce78e3b1488fdbad67af06ab953ee7382241b2f3b7d0d6c7a47a087b01
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B69 4980 bytes
font_01_sfnt_off00006c5d.bin
2468e3af36c2334ccd2f38dcc8ac3c549ca282e5f55ab095e27b2aa944626277
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5D 10176 bytes
font_02_sfnt_off00008f4b.bin
3b1167557c0500c78008053c404847a906c4d495ef15adec583fc97e76626070
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F4B 16068 bytes