Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f76958b77d8fa0…

MALICIOUS

PDF

40.2 KB Created: 2020-09-03 02:51:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c554a3d5fe454504ff1f7d84dca26a4f SHA-1: 1fda8c35a3ed984850e3b33de10a8df584a237d0 SHA-256: c6f76958b77d8fa01990b0e9d51897a624e7dcb22be38a0e917abccbf204c383
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/wix?keyword=vidmate+app++install+old+version+2015'. This indicates a social engineering attempt to trick the user into downloading potentially malicious content. The presence of a 'download button' heuristic further supports this, suggesting a lure. The document body, though heavily corrupted, contains the same malicious URL and a benign-looking PDF URL, reinforcing the attack pattern.

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.
  • 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.me/wix?keyword=vidmate+app++install+old+version+2015
    • https://cdn.shopify.com/s/files/1/0434/1825/5510/files/population_variance_formula.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fejatomamegebuwugibuvu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7345/3724/files/jotavojenasofuvokegodis.pdf
    • https://cdn.shopify.com/s/files/1/0429/6343/5679/files/97299011959.pdf
    • https://cdn.shopify.com/s/files/1/0431/1112/1063/files/white_stained_glass_minecraft.pdf
    • https://static.usrfiles.com/ugd/5fd5c1_5ad880e0598740fab889ab863112ed9a.pdf
    • https://static.usrfiles.com/ugd/c1108c_0d0ee6815b8b47ab9b4eda5c837869e9.pdf
    • https://static.usrfiles.com/ugd/516793_1891371a20f94da582d06d0e887fb7c2.pdf
    • https://static.usrfiles.com/ugd/03a576_0d30ad640bfb4e789d50c6389c88d1d3.pdf
    • https://static.usrfiles.com/ugd/cbe7f7_ef17234dc38c4c4d9fc8a80b5ba6ffeb.pdf
    • https://cdn.shopify.com/s/files/1/0438/5875/5749/files/differences_between_public_limited_company_and_private_limited_company.pdf
    • https://cdn.shopify.com/s/files/1/0432/2063/1720/files/asamardhuni_jeeva_yatra_novel_download.pdf
    • https://cdn.shopify.com/s/files/1/0465/3193/6414/files/blossoms_of_the_savannah_notes.pdf
    • https://static.usrfiles.com/ugd/b8c837_d4596a7deb9a4e2b80d4de45785102e6.pdf
    • https://static.usrfiles.com/ugd/451461_0f5870f08e974ce5baeaaee8cf72fc35.pdf
    • https://static.usrfiles.com/ugd/eaf48f_3456538e8d504838ba1dee2cc8cce634.pdf
    • https://static.usrfiles.com/ugd/b8c837_59e7076e87374505bc6151c15849b6e4.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_off00005ddf.bin
5b35491835c7724ef73edc3f97105952458ca633996c8414d737fa93f95f1dce
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDF 5580 bytes
font_01_sfnt_off000070cf.bin
ad32b81985c93f322afc2c4524ec952acd982ef3e036ebc2f890dfd6cadd2366
pdf-font-stream PDF embedded font (sfnt) at offset 0x70CF 10404 bytes