Malicious PDF — malware analysis report

Static analysis result for SHA-256 df34b2435b08a868…

MALICIOUS

PDF

40.8 KB Created: 2020-08-20 22:22:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c0eaff36afdf06471660c2d7ba67922 SHA-1: d0150322bcfba82b0f81cce175555604c10a9faf SHA-256: df34b2435b08a868528362f72f31054c985da6f10c8fddcfd770b39c024191d4
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=2014+buick+encore+repair+manual'. This URL is presented within the document body, disguised as a '2014 buick encore repair manual'. The file also exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains, but one suspicious link to 'http://files.bugayinvestments.com/uploads/1/3/1/4/131408664/dufizegarovofel_xufelilapaxifaz_vafanegi.pdf'. The primary malicious link likely serves as a lure to redirect users to malicious infrastructure.

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/pify?keyword=2014+buick+encore+repair+manual
    • http://files.bugayinvestments.com/uploads/1/3/1/4/131408664/dufizegarovofel_xufelilapaxifaz_vafanegi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5286/7477/files/52256281688.pdf
    • https://cdn.shopify.com/s/files/1/0434/4266/7676/files/40494737130.pdf
    • https://cdn.shopify.com/s/files/1/0463/4066/9602/files/anthropics_portrait_professional_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/2210/6269/files/87652186101.pdf
    • https://cdn.shopify.com/s/files/1/0433/2906/1032/files/2645433849.pdf
    • https://cdn.shopify.com/s/files/1/0430/7157/0069/files/linufizukovorowonawa.pdf
    • https://cdn.shopify.com/s/files/1/0430/2559/6573/files/cephalexin_and_metformin_drug_interaction.pdf
    • https://cdn.shopify.com/s/files/1/0431/3622/1341/files/sogute.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22271122494.pdf
    • https://cdn.shopify.com/s/files/1/0432/5516/9186/files/wibiwus.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17810153535.pdf
    • https://cdn.shopify.com/s/files/1/0439/1780/3675/files/luma3ds_enable_game_patching.pdf
    • https://cdn.shopify.com/s/files/1/0438/3434/3574/files/58803154521.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_off000054b9.bin
95f97fb06eb28185060cf6b4899639af61ec67ab774f0d12d38b86b491c09ed1
pdf-font-stream PDF embedded font (sfnt) at offset 0x54B9 5224 bytes
font_01_sfnt_off0000664b.bin
0f75bc1d4344dd4cece99b4e2a314e1d0fb72d1cc98cd81264a226edfe35d18d
pdf-font-stream PDF embedded font (sfnt) at offset 0x664B 9856 bytes
font_02_sfnt_off00008813.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x8813 4324 bytes