Malicious PDF — malware analysis report

Static analysis result for SHA-256 e74f08d49c2ad852…

MALICIOUS

PDF

51.8 KB Created: 2020-07-08 18:47:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 716b6e7f23f693a8976d887d658da4de SHA-1: c914c48502c90a2df83ac78b4bf79a45d9be8682 SHA-256: e74f08d49c2ad85293276b012d407150d6f41cc6665779ed52cda5688d4f8e16
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting a link farm designed to manipulate search engine results or distribute malicious content. One of these links, 'https://ttraff.com/wb?keyword=soil%20stabilization%20methodology%20pdf', is flagged as a 'PDF_MALICIOUS_REDIRECTOR_LINK'. The document body is heavily obfuscated and contains remnants of the authoring application, but the primary malicious intent appears to be the mass distribution of links.

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/wb?keyword=soil%20stabilization%20methodology%20pdf
    • http://files.dassiedahan-author.com/uploads/1/3/1/4/131436971/wixodasa.pdf
    • http://files.asacottrelldar.org/uploads/1/3/1/3/131398066/29d3d713096556f.pdf
    • http://files.atlantadentalanesthesia.com/uploads/1/3/1/4/131455883/najikenusapijevofifu.pdf
    • http://files.salsamama.org/uploads/1/3/2/6/132695361/2b30dd65f5dd.pdf
    • http://files.vibrationsforlife.com/uploads/1/3/1/3/131379371/powagojowa.pdf
    • http://files.sensibleshock.com/uploads/1/3/2/7/132740479/vasesejakukek_faxej_lelikam.pdf
    • http://files.seafoammag.com/uploads/1/3/0/8/130813409/23d5e3451f8c9.pdf
    • http://files.anniepercussion.com/uploads/1/3/2/7/132740321/disatibe.pdf
    • http://files.thecherigroves.com/uploads/1/3/1/3/131398156/0c09cff1c7.pdf
    • https://gulovuvuf.files.wordpress.com/2020/07/ketuzugojizebev.pdf
    • https://folumos521991706.files.wordpress.com/2020/06/fosudabegurabijixereneki.pdf
    • https://borakav.files.wordpress.com/2020/06/zovapegusumeguwiwuna.pdf
    • https://ronoretexupo.files.wordpress.com/2020/06/rodalitejadedujiwa.pdf
    • https://woritodo.files.wordpress.com/2020/07/7649723083.pdf
    • https://dekabamofo.files.wordpress.com/2020/07/ruzeki.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wadilizesiwegokadokepub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89120948070.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kilezibuvi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69892687871.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mekokagowofulagifofid.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kemisavixazesunomezixe.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/
    • https://cdn.shopify.com/s/files/1/0428/9835/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008cee.bin
1834ad3fa0e03dff77b746167e0c64870a27cf5775f074b9959b7ba75fba1e86
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEE 5544 bytes
font_01_sfnt_off00009fa0.bin
8cd1851e136aca79713b975457042ef0fcc16d956a9c8bdbb6372a07b47fb144
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FA0 10060 bytes