Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a39e075cf75e1a3…

MALICIOUS

PDF

46.1 KB Created: 2020-08-29 07:31:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ef27320554865ee1b23f8aec5548344 SHA-1: 5643c4a099948eb9f1cea0017f209783e88dc215 SHA-256: 8a39e075cf75e1a3268ae324023c8c8cbb9e64fb27afa81ea940ed81ae2fb03d
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many hosted on Shopify, designed to appear as legitimate documents but ultimately redirecting to a malicious URL. The primary malicious URL, https://ttraff.ru/wix?keyword=ezviz+cs-+cv246+manual, is identified as a redirector. This indicates a link farm or SEO poisoning tactic to lure users into clicking on potentially harmful content.

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.ru/wix?keyword=ezviz+cs-+cv246+manual
    • https://cdn.shopify.com/s/files/1/0427/8219/5879/files/bimiwe.pdf
    • https://cdn.shopify.com/s/files/1/0436/7620/5209/files/rokibixiwipipimiba.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/joluvajulidofikexisam.pdf
    • https://cdn.shopify.com/s/files/1/0437/3043/6247/files/jopixubapexojugi.pdf
    • https://cdn.shopify.com/s/files/1/0428/7083/3319/files/vancomycin_resistant_enterococci.pdf
    • https://cdn.shopify.com/s/files/1/0438/8893/5067/files/57712614415.pdf
    • https://cdn.shopify.com/s/files/1/0435/7865/4883/files/pokemon_sun_moon_gba_version_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/0057/5638/files/obs_open_broadcaster_software.pdf
    • https://cdn.shopify.com/s/files/1/0428/4294/7751/files/ndt_technician_resume.pdf
    • https://cdn.shopify.com/s/files/1/0434/7405/9430/files/medicine_bursaries_2020_application_forms.pdf
    • https://cdn.shopify.com/s/files/1/0431/8081/8581/files/butisimosadusaxilajiri.pdf
    • https://cdn.shopify.com/s/files/1/0434/0095/4021/files/mepezukelogududelox.pdf
    • https://cdn.shopify.com/s/files/1/0431/9880/8224/files/zozewunipigimexuzarujido.pdf
    • https://cdn.shopify.com/s/files/1/0465/0536/1566/files/51808000011.pdf
    • https://static.usrfiles.com/ugd/b8c837_2118bb7747e146ccbc5113a3c7f1e372.pdf
    • https://static.usrfiles.com/ugd/b8c837_a3ebaa9e2aa0457ebb96fe2102f33ab0.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_off00006a2e.bin
0c0397b0ec16d8851e645cf76e770fc2ab0f22566e3e6b54a5c82b72bb7014cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2E 4896 bytes
font_01_sfnt_off00007ac2.bin
c82d5b2b28d0d857662bc76a923ff392d645a8e70159959e03288804cf35705c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC2 10168 bytes
font_02_sfnt_off00009d5b.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D5B 4324 bytes