Malicious PDF — malware analysis report

Static analysis result for SHA-256 88bcf4e357b17e52…

MALICIOUS

PDF

43.4 KB Created: 2020-09-01 09:03:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63370f8333aa441cb63400c8b7dbfcd4 SHA-1: dc57d27ab5cb9e040f51d5e701980b22576f02d8 SHA-256: 88bcf4e357b17e52892dec5118313183057cf25374a6405fc0876e292f04fce1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a large number of embedded links, a technique often used for SEO poisoning or to direct users to malicious websites. One of the embedded URLs, 'https://ttraff.cc/wix?keyword=come+on+my+way+pubg+song', is flagged as a known malicious redirector. The document body contains garbled text along with this URL and other benign-looking Shopify URLs, suggesting a lure to a malicious site.

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=come+on+my+way+pubg+song
    • https://cdn.shopify.com/s/files/1/0431/5529/2321/files/91433784967.pdf
    • https://cdn.shopify.com/s/files/1/0433/4419/9829/files/29479039871.pdf
    • https://cdn.shopify.com/s/files/1/0433/6379/5096/files/faterenokafuzojixero.pdf
    • https://cdn.shopify.com/s/files/1/0438/2559/4530/files/pixuwugukifutezu.pdf
    • https://static.usrfiles.com/ugd/097bd5_18a0681448904058b753dd758f986c6d.pdf
    • https://static.usrfiles.com/ugd/902d29_313c50dad27b48eaacb9e040cbb66088.pdf
    • https://static.usrfiles.com/ugd/735424_e392618a39ba43359a6af6c03fd44dd2.pdf
    • https://cdn.shopify.com/s/files/1/0462/8483/2928/files/pikekojovafemoxedar.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/lozaz.pdf
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/33412982124.pdf
    • https://cdn.shopify.com/s/files/1/0436/1961/4882/files/85004685138.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d23.bin
ac3ec431cbb9b12a6c7aded88d7e311e549e71b251ba0732ddc36bd1789ebad2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D23 5248 bytes
font_01_sfnt_off00006efd.bin
cbf904716a303d284b1948f5bc8bec8447c57266b57165afe8638f10cc8258de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFD 4976 bytes
font_02_sfnt_off00007cc9.bin
14c5cccaa7672522d3dbf6d3a2374e48ad37010983b5daa89b67525459e9e6f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC9 10668 bytes

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