Malicious PDF — malware analysis report

Static analysis result for SHA-256 5737821979093408…

MALICIOUS

PDF

47.0 KB Created: 2020-08-18 20:33:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c6d63d4d358058343150f1b21ab0e433 SHA-1: b30d19e6db3a811f45b9db5b4eb9811dd6878318 SHA-256: 5737821979093408a2de65f3b811eebd9b4306d31a7bfa74a789d7e988438409
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious File

The PDF contains a lure to install a browser extension or update, directing users to click a link. This link, 'https://ttraff.com/pify?keyword=firefox+older+version+52', leads to a known malicious redirector. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm used for SEO poisoning to attract victims. No scripts were extracted, but the combination of social engineering and redirection to malicious infrastructure is a common delivery method.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/pify?keyword=firefox+older+version+52
    • http://files.bythebible.org/uploads/1/3/0/8/130873781/fozimibigenu.pdf
    • http://buwexu.samuelcjohnsonartist.co.uk/uploads/1/3/1/1/131163599/3275594.pdf
    • http://files.estatecomputers.net/uploads/1/3/1/4/131437599/papasuvejubikeb_vediruwun.pdf
    • http://files.univerdant.com/uploads/1/3/1/4/131438759/6938797.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8833338052.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/pogivifaxufiwalonon.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/financial_management_theory_practice_15th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0447/8969/4630/files/characteristics_of_athenian_democracy.pdf
    • https://cdn.shopify.com/s/files/1/0428/9862/0569/files/47037417254.pdf
    • https://cdn.shopify.com/s/files/1/0431/4189/0208/files/fill_in_the_blank_resume.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/80575947087.pdf
    • https://cdn.shopify.com/s/files/1/0430/3038/0698/files/35422992528.pdf
    • https://cdn.shopify.com/s/files/1/0430/9296/7581/files/jejabinim.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b33.bin
1e2484b7658c59184f3a71c4f111d2a6ae64ff5722d98694ef3fcfaae9007a94
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B33 4740 bytes
font_01_sfnt_off00007b64.bin
996587f78dd00b5dffb6dc46a4dc57c7367726cd5b142d718a13c2be9a1e5e73
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B64 11392 bytes
font_02_sfnt_off0000a12a.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xA12A 4324 bytes