Malicious PDF — malware analysis report

Static analysis result for SHA-256 58648929b80d9ad1…

MALICIOUS

PDF

43.2 KB Created: 2020-08-22 08:12:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52ef9109aa3309706f45a6cdd7c6365e SHA-1: f52dd4fd9a20f0f7eed6a7bae566f5678e109fb8 SHA-256: 58648929b80d9ad1d1ef0f9869e5e28b9a67ab59d70882bbfc9b4f1dd77ea731
168 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, suggesting a link farm for SEO poisoning or redirection. The presence of a 'download button' lure and instructions for a password-protected archive indicates a social engineering attempt to trick the user into downloading a payload. The primary malicious URL identified is https://ttraff.ru/pify?keyword=burp+suite+pro+full.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=burp+suite+pro+full
    • http://virewiwew.secondstoryhoney.com/uploads/1/3/1/0/131070894/bb3aa89b1b1acd.pdf
    • http://kolamozuj.tammymclain.com/uploads/1/3/1/4/131406717/9694312.pdf
    • http://files.mostlyaboutmoney.com/uploads/1/3/1/3/131383959/sowumed.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/82334851165.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/bidefetowebajekerab.pdf
    • https://cdn.shopify.com/s/files/1/0431/5666/8565/files/wogotifojunezidifelasivoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/9503/8877/files/92604429941.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92702877098.pdf
    • https://cdn.shopify.com/s/files/1/0428/1673/3340/files/4114337039.pdf
    • https://cdn.shopify.com/s/files/1/0432/5693/8664/files/67951616029.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40369191557.pdf
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/62113485640.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_off00006c3c.bin
ba3457a203ade5babb1a061f75e3bd358bacbc195f4aeb4444f993c4fe3bfd72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3C 4732 bytes
font_01_sfnt_off00007c6e.bin
4c9114684ccf2eeab630e2901bafad7d5f83bf2a066dd9b98ee7272cc5e9e65e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6E 10560 bytes

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