Malicious PDF — malware analysis report

Static analysis result for SHA-256 f494767f260c3f54…

MALICIOUS

PDF

43.4 KB Created: 2020-08-15 03:18:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d9352f77ca5095d31260b381146c6a5 SHA-1: f5ae092808ef4ad8d6da6c14c9223dc2ceede8d7 SHA-256: f494767f260c3f54e702165b0f9451c50f578fb31f07f31e81e1fdce4d6a8ec4
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to a 'Sample email format for job application' and includes a critical heuristic firing for a malicious redirector link. This link points to 'ttraff.ru', which is known for malicious redirection. The document also contains a PDF link farm, with many links pointing to Shopify domains, likely for SEO manipulation or to obscure the malicious redirector. The presence of a download button lure further supports the malicious intent.

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=sample+email+format+for+job+application
    • http://files.coburg-north-ps.vic.edu.au/uploads/1/3/0/8/130813609/papoju.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/90321796114.pdf
    • https://cdn.shopify.com/s/files/1/0431/8950/2111/files/1st_year_biology_book_kpk.pdf
    • https://cdn.shopify.com/s/files/1/0432/9259/0236/files/aptitude_test_examples.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/ibps_po_results.pdf
    • https://cdn.shopify.com/s/files/1/0431/4093/9933/files/89198501976.pdf
    • https://cdn.shopify.com/s/files/1/0447/9310/2493/files/anguttara_nikaya_english_translation.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinubigelezegir.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/98904595548.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/84602765162.pdf
    • https://cdn.shopify.com/s/files/1/0433/9236/8796/files/antecedentes_judiciales_certificado.pdf
    • https://cdn.shopify.com/s/files/1/0431/0482/9589/files/giteveda.pdf
    • https://cdn.shopify.com/s/files/1/0432/3354/2303/files/hssc_lab_attendant_syllabus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78476378890.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_off00006b32.bin
2e786ee248ddecd409af2d876a3d42df6b2d41b7f5654159f3a9c7c99e1292db
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B32 5300 bytes
font_01_sfnt_off00007d22.bin
bce8b3d17ed025b454de304674d932556fb24af101f4a489e4e1693899a51e63
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D22 10452 bytes