Malicious PDF — malware analysis report

Static analysis result for SHA-256 aef2c93e827b1f41…

MALICIOUS

PDF

42.6 KB Created: 2020-08-14 01:53:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58e20aa5db70479e409e548ea402c428 SHA-1: 5e4c47dc8ff99f74dff3566573d273d01408ffe0 SHA-256: aef2c93e827b1f41ad69e7c975de0f3084c72bca7a7ad85adce0a9d7d8f1b60c
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a job description and the malicious URL. This suggests a social engineering attack where the user is tricked into clicking the malicious link, likely to download further malware or engage in phishing. No scripts were extracted from this sample.

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=assistant+front+office+manager+job+description+pdf
    • http://files.m-w-consulting.org/uploads/1/3/1/3/131381095/kifuwejadagef.pdf
    • http://bipojabu.ural-accessory-parts.com/uploads/1/3/1/3/131398140/9be5bcb.pdf
    • http://files.theloftsorrento.com/uploads/1/3/1/3/131383294/pemojorevoketemixabo.pdf
    • http://files.watkinsdeals.com/uploads/1/3/1/1/131163898/salum-masep-lazusezopixilol.pdf
    • https://cdn.shopify.com/s/files/1/0436/7374/7609/files/lurevogozosujodopaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/4717/4822/files/sibajumememunevawodedur.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/91667840637.pdf
    • https://cdn.shopify.com/s/files/1/0430/9614/6074/files/57634991230.pdf
    • https://cdn.shopify.com/s/files/1/0436/8649/4361/files/ukulele_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0447/0823/3369/files/the_practice_episodes.pdf
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/jiredagemumuvatereg.pdf
    • https://cdn.shopify.com/s/files/1/0427/9340/2534/files/47504967585.pdf
    • https://cdn.shopify.com/s/files/1/0438/0806/3649/files/yamaha_outboard_service_manual_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/3123/1644/files/dokolijamofumamilokugiraz.pdf
    • https://cdn.shopify.com/s/files/1/0439/4464/0667/files/blue_sky_surf_report.pdf
    • https://cdn.shopify.com/s/files/1/0437/1080/8213/files/nimawafufojidonol.pdf
    • https://cdn.shopify.com/s/files/1/0431/9140/2660/files/vunetope.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_off0000668a.bin
3fbbe8fbcf44aa6e473e4568328f6a5f1d82f2f5097c2585d4ec05c03151755b
pdf-font-stream PDF embedded font (sfnt) at offset 0x668A 5648 bytes
font_01_sfnt_off0000799c.bin
c8e01c84c6845a874737b33029dfc763d641bdbd6ed163f4cdfd622ccabac71e
pdf-font-stream PDF embedded font (sfnt) at offset 0x799C 10480 bytes