Malicious PDF — malware analysis report

Static analysis result for SHA-256 c94a93aac56af81b…

MALICIOUS

PDF

60.6 KB Created: 2020-08-31 00:20:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f90533e796f38f684058b0c16f3b1db SHA-1: 4d3ec25b14d5362c475f7c96ae6329483a477995 SHA-256: c94a93aac56af81b49a63d97d093b4ab86df159e4137f09b31b113e96d028dc5
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This suggests a phishing or scam attempt where the user is enticed to click on links that lead 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.cc/wix?keyword=motivation+assessment+scale+reliabil
    • https://cdn.shopify.com/s/files/1/0437/7490/2423/files/54159357969.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/japji_sahib_english.pdf
    • https://cdn.shopify.com/s/files/1/0438/1802/5117/files/88102171222.pdf
    • https://cdn.shopify.com/s/files/1/0437/7162/5634/files/81735006691.pdf
    • https://cdn.shopify.com/s/files/1/0440/9737/2312/files/pazubiset.pdf
    • https://static.usrfiles.com/ugd/a2c2bc_69aacd5e090344cea44a1da44fe7cacb.pdf
    • https://static.usrfiles.com/ugd/5b9a87_6a6d966ab86d44ac900f621209695438.pdf
    • https://static.usrfiles.com/ugd/111c46_2a94e09fd8ad447793dde50ae9f564f1.pdf
    • https://static.usrfiles.com/ugd/384ea4_029a4be3a9c8446995ed79e7738baf48.pdf
    • https://cdn.shopify.com/s/files/1/0432/3291/9720/files/ffxiv_damage_parser.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43127542751.pdf
    • https://cdn.shopify.com/s/files/1/0430/6737/5777/files/moxozukakupoxutigez.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0840/files/kindle_format_support.pdf
    • https://doi.org/10.1007/978-
    • 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_off0000af0c.bin
e3657a54bd4d6322fd797c97b1f30a1e3a681e2fb7237a1f30a7748cbf325618		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF0C 5152 bytes
font_01_sfnt_off0000c080.bin
3e67d2e9851b934d3bdd7847600443458d9afe471ffdb6882667f89fdbd3c489		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC080 10876 bytes

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