Malicious PDF — malware analysis report

Static analysis result for SHA-256 a24af2cc08b4801c…

MALICIOUS

PDF

43.4 KB Created: 2020-07-30 05:18:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 596e5485f8d2118109721d50e437d01c SHA-1: 987a3ab8eb9af61d699f8b878fecec8c1d5275d0 SHA-256: a24af2cc08b4801c755def8247df09be3912b89d5e5cc3bf387cbe723fef67c0
128 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including a critical finding of a link to known malicious redirector infrastructure. Additionally, it features a large number of external PDF links, suggesting a link farm for SEO manipulation or traffic redirection. The presence of a 'download button' lure further supports a deceptive user interaction pattern. The primary malicious URL identified is ttraff.ru, which is used to redirect users to other content.

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=chuy%25E1%25BB%2583n+t%25E1%25BB%25AB+h%25C3%25ACnh+%25E1%25BA%25A3nh+sang+pdf
    • http://files.bardosdiamondsports.com/uploads/1/3/1/4/131437859/bozesar_gowosetipibizu_xuvumixafig.pdf
    • http://files.dianartist.com/uploads/1/3/0/7/130740490/davadobazal-xekalusovu-litab.pdf
    • http://files.peorialawyers.com/uploads/1/3/1/6/131606677/vakeduz_xakutuvexeta_gogeb_rofivaneduw.pdf
    • http://files.fleurieurecycling.com/uploads/1/3/0/7/130740517/f724235b66ab.pdf
    • https://cdn.shopify.com/s/files/1/0435/7039/7352/files/ravaludirivun.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fixasitisajixumazurezeve.pdf
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/21291633796.pdf
    • https://cdn.shopify.com/s/files/1/0431/1816/6167/files/selepubome.pdf
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/roleriguf.pdf
    • https://cdn.shopify.com/s/files/1/0431/1531/5349/files/40886243889.pdf
    • https://cdn.shopify.com/s/files/1/0429/5848/7703/files/vawepovavizagonu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4543/7083/files/butikada.pdf
    • https://cdn.shopify.com/s/files/1/0432/5274/4347/files/72219556399.pdf
    • https://cdn.shopify.com/s/files/1/0432/2181/1364/files/turalijovipopobe.pdf
    • https://cdn.shopify.com/s/files/1/0434/8579/0365/files/mafizumozog.pdf
    • https://cdn.shopify.com/s/files/1/0439/1154/4987/files/vasijuzurizuxalomugave.pdf
    • https://cdn.shopify.com/s/files/1/0428/2499/0887/files/misivarozalatoxemuko.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_off00006948.bin
93d7e4f0ffe3406989ee3449fc706524cea24bc05bb23a70a5c2fa9083aa4872
pdf-font-stream PDF embedded font (sfnt) at offset 0x6948 5592 bytes
font_01_sfnt_off00007bae.bin
4392b326974b507be5d71783221ce06720da102e333e77c875ca5cd3cacb87aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BAE 10212 bytes