Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc205dc7df14e953…

MALICIOUS

PDF

39.4 KB Created: 2020-09-07 01:28:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44b724e274296de6180d99ad8c39f99a SHA-1: 6b0a54f2218f23f8c1dd18af02badfa7c136c6e0 SHA-256: fc205dc7df14e953b65d02bfbab64ac3cb05ecc3d3ee70ca8c69c9e532c6b3bd
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=approval+addiction+free+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains the same malicious redirector URL and references to PDF files, reinforcing the lure. No scripts were extracted, and the file type is PDF, suggesting a social engineering attack leveraging links.

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.club/wix?keyword=approval+addiction+free+pdf
    • https://static.usrfiles.com/ugd/cf14a4_2b6622b6f0334d6fb3f2cd7a78cdeab1.pdf
    • https://static.usrfiles.com/ugd/e5412a_f042fbeedcd94b3aa06b7b51a7cb5cad.pdf
    • https://static.usrfiles.com/ugd/6c98bc_e9651690cdd541cd908e9e8ca56436d3.pdf
    • https://static.usrfiles.com/ugd/b8c837_a57ffd855f71458aa2575c9167b7847e.pdf
    • https://static.usrfiles.com/ugd/b8c837_76bac145d3f942f5895190352fac18c3.pdf
    • https://cdn.shopify.com/s/files/1/0430/4722/3458/files/96309719945.pdf
    • https://cdn.shopify.com/s/files/1/0465/4956/5590/files/free_competency_framework_template.pdf
    • https://cdn.shopify.com/s/files/1/0466/6454/8517/files/bioavailability_pharmacology.pdf
    • https://cdn.shopify.com/s/files/1/0435/6436/8021/files/wallpaper_anime_hd_android_xiaomi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/44105050101.pdf
    • https://cdn.shopify.com/s/files/1/0431/0332/2269/files/9413569675.pdf
    • https://cdn.shopify.com/s/files/1/0440/2806/7990/files/21017598805.pdf
    • https://static.usrfiles.com/ugd/ea2c45_bddc757e84db49b4abcd0a263f680092.pdf
    • https://static.usrfiles.com/ugd/cc14e4_6c117262251a46ec953416c60e083e15.pdf
    • https://static.usrfiles.com/ugd/913720_7f8d0a78fc3749989a4bf8481c191c79.pdf
    • https://static.usrfiles.com/ugd/ef7486_94ec010e0f7448ffba77a6dfa4dcbb3d.pdf
    • https://static.usrfiles.com/ugd/b8c837_38cd90dd58504d1fadfffde7be757e50.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_off00005d6f.bin
b37c92b6b6fae23ae98e55aae8c400ebb8cd38cfac945e209c099aa5d9a7af51
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6F 5020 bytes
font_01_sfnt_off00006e9c.bin
92af23d92735b634e64714ec9d197206d8b6aa57c305a49ef599e230ab261ba2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9C 9932 bytes