Malicious PDF — malware analysis report

Static analysis result for SHA-256 23eacf2f83b085ae…

MALICIOUS

PDF

33.6 KB Created: 2020-08-20 23:58:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9babe26cf4fb71567cf5bfcf94c56df SHA-1: 06ed012ebdb6cf1f1ea7344070b94971ee75f705 SHA-256: 23eacf2f83b085aecedc63c9b3eb9eba61f043b6af901e160faae3685323c5f5
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector heuristic. The primary malicious URL identified is https://ttraff.com/pify?keyword=accordi+ukulele+soprano+pdf, which is likely used to funnel victims to further malicious content. The presence of numerous links, including to potentially compromised Shopify domains, suggests a link farm or SEO poisoning tactic to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=accordi+ukulele+soprano+pdf
    • http://rumid.stemteachershou.net/uploads/1/3/0/7/130775354/mimova-xivur-lowalukoxopike-kuziseveb.pdf
    • http://files.parisglam.com/uploads/1/3/2/6/132681698/e51268cc986f.pdf
    • https://cdn.shopify.com/s/files/1/0437/5104/7329/files/97026257657.pdf
    • https://cdn.shopify.com/s/files/1/0438/4541/9173/files/42226379731.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/rpsc_stenographer_syllabus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/9051/7917/files/42366783723.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/zobaduviwusofu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/49219491162.pdf
    • https://cdn.shopify.com/s/files/1/0431/0604/2023/files/vibatafisonuxifijunonav.pdf
    • https://cdn.shopify.com/s/files/1/0432/6991/4782/files/regapavixulakimid.pdf
    • https://cdn.shopify.com/s/files/1/0436/9776/6553/files/12525612942.pdf
    • https://cdn.shopify.com/s/files/1/0427/6148/6503/files/9777937471.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_off0000473c.bin
5caf76632163cebeb055c421334c0d9e14bfff3400e7aa41b8e1ced611110476		 pdf-font-stream PDF embedded font (sfnt) at offset 0x473C 5200 bytes
font_01_sfnt_off000058fe.bin
30bc62ce0b88e080d0769bc22e4a712fe5f753bbbbde07843820d655148bccf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58FE 9660 bytes

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