Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6956e9971a9a49a…

MALICIOUS

PDF

41.3 KB Created: 2020-08-22 19:29:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fba8c960a3a79156616e94cdb74b81b3 SHA-1: 21d7c2180fdb9fb94fb9f620b28ff68f102cb57a SHA-256: f6956e9971a9a49ac946a4d6a7f503c6bfa1e865bf3495c6a2cfb8afb8697942
128 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, characteristic of a link farm. One of these links, 'https://ttraff.ru/pify?keyword=sap+hana+studio+mac', is identified as a malicious redirector. This suggests the document is designed to lure users to malicious sites, potentially for phishing or to download further malware. The presence of a 'download button' heuristic further supports a deceptive workflow.

Heuristics 4

  • 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.
  • 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://ttraff.ru/pify?keyword=sap+hana+studio+mac
    • http://files.rgcgymnastics.org/uploads/1/3/1/0/131070166/546036824.pdf
    • http://files.countryintheuk.com/uploads/1/3/1/3/131398461/a9eab4ddcb4fb.pdf
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/19372630621.pdf
    • https://cdn.shopify.com/s/files/1/0434/0560/7070/files/37550223061.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86399573169.pdf
    • https://cdn.shopify.com/s/files/1/0437/5832/1818/files/conan_exiles_named_armorer.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3434/files/59559421589.pdf
    • https://cdn.shopify.com/s/files/1/0428/2050/1660/files/59410015052.pdf
    • https://cdn.shopify.com/s/files/1/0437/7467/3057/files/23718194293.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5093/files/nouredine_zettili_quantum_mechanics.pdf
    • https://cdn.shopify.com/s/files/1/0429/0212/6755/files/orbit_er_linux.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/guwegisogef.pdf
    • https://cdn.shopify.com/s/files/1/0430/7812/3680/files/70414810662.pdf
    • https://cdn.shopify.com/s/files/1/0452/2953/9485/files/broaching_tool_nomenclature.pdf
    • https://cdn.shopify.com/s/files/1/0434/5489/0149/files/69395186317.pdf
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/bawimunudaxisi.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_off0000634a.bin
e82c6e20f6d1a7a8dee1e144736ad5519e1e5a8753ca42d2be8d86b57bffeb13
pdf-font-stream PDF embedded font (sfnt) at offset 0x634A 5288 bytes
font_01_sfnt_off00007511.bin
6928fb8b9754cc6fb89b352d4eee8ae93a2b21e5e4e3f60e5375d384368a960e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7511 10416 bytes