Malicious PDF — malware analysis report

Static analysis result for SHA-256 d58ae81b811df56d…

MALICIOUS

PDF

35.8 KB Created: 2020-08-22 08:06:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 604bf14dfa6c2552fc5dd957ba578028 SHA-1: 81870cdf39e85e4e293c62a1a9549b90938f9a1a SHA-256: d58ae81b811df56d071048df0012c3296d36f999b8b39a44174d0da99fa9c696
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a link farm designed to mimic legitimate documents, with one primary link redirecting to malicious infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link https://ttraff.cc/pify?keyword=carsales.+com+limited+annual+report is part of a known malicious redirector chain. The document body, though heavily obfuscated, contains this URL and other Shopify-hosted PDF links, suggesting a phishing or malware distribution lure.

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=carsales.+com+limited+annual+report
    • http://wumaxo.footprintspodiatry.co.nz/uploads/1/3/2/6/132696030/c9fd1ea902ea.pdf
    • http://files.cornerhealthfoods.com/uploads/1/3/0/7/130738943/dofijikolofa_gabuzu_bifuvutijoked_xuwudaxeda.pdf
    • http://xemes.goyurgroup.com/uploads/1/3/1/4/131482995/994e66d7e2f2e.pdf
    • http://joton.olgabaptist.org/uploads/1/3/0/7/130775565/xekanotudabefinapesu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8106/4853/files/torrentli_film_indir.pdf
    • https://cdn.shopify.com/s/files/1/0433/8683/0998/files/xopifeduzofejetawowube.pdf
    • https://cdn.shopify.com/s/files/1/0431/8615/9767/files/61804756436.pdf
    • https://cdn.shopify.com/s/files/1/0437/9947/8434/files/amd_install_manager.pdf
    • https://cdn.shopify.com/s/files/1/0428/7338/9223/files/17158823239.pdf
    • https://cdn.shopify.com/s/files/1/0432/1456/9640/files/bojikuloretalovitawezizu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2811/7661/files/free_aptitude_test.pdf
    • https://cdn.shopify.com/s/files/1/0433/9413/8268/files/gefemi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7497/7945/files/swedish_arbitration_act_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/zelifu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9746/4731/files/konimerapefij.pdf
    • https://cdn.shopify.com/s/files/1/0430/6475/4325/files/kptl_annual_report.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_off00004fa4.bin
b295aaa6017177e6a8fee253479788cfc09ea59f4c59312e8f00fe26c304261d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FA4 5156 bytes
font_01_sfnt_off0000610f.bin
4e41036477a1d884ed9039ee54d54ba391dba0cc008283710c494d5f76d26864		 pdf-font-stream PDF embedded font (sfnt) at offset 0x610F 9760 bytes

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