Malicious PDF — malware analysis report

Static analysis result for SHA-256 570572ce4e4d0019…

MALICIOUS

PDF

42.5 KB Created: 2020-09-01 10:50:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63ba790542adaebf52ae62fc50d4a94e SHA-1: c54d32324662f569fcb12d57da2330b5a52283c5 SHA-256: 570572ce4e4d0019367870ca3312b07fd379928931eb7d83cedba7d726f33019
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=molecular+biology+reports+login'. This URL is presented within the document body, suggesting a phishing or social engineering attempt to trick the user into visiting a malicious site. The file also exhibits characteristics of a link farm, with numerous embedded links, many of which point to benign Shopify URLs, likely used to obscure the malicious redirector. No scripts were extracted, but the presence of the malicious URL and the link farm technique strongly indicate a phishing attack.

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/wix?keyword=molecular+biology+reports+login
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/13145418779.pdf
    • https://cdn.shopify.com/s/files/1/0465/3088/7830/files/password_protect_a_worksheet_in_excel_vba.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5237/files/34766059985.pdf
    • https://cdn.shopify.com/s/files/1/0430/7573/1616/files/retifijojafos.pdf
    • https://cdn.shopify.com/s/files/1/0430/3699/9831/files/terolonupi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/principles_of_biochemical_tests_in_diagnostic_microbiology.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/somotenixoropunugikuxime.pdf
    • https://cdn.shopify.com/s/files/1/0430/7976/2073/files/68355436014.pdf
    • https://cdn.shopify.com/s/files/1/0434/6766/9654/files/tugibo.pdf
    • https://cdn.shopify.com/s/files/1/0448/1184/5793/files/bios_update_asus.pdf
    • https://cdn.shopify.com/s/files/1/0463/6796/5339/files/34296967116.pdf
    • https://static.usrfiles.com/ugd/c5d40f_2816b7839b484bb3ba997927db7e4dd4.pdf
    • https://static.usrfiles.com/ugd/d78803_90fb70abd6844de49e63d8f3747dcb22.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_off00006864.bin
cfb1d6c58ba066f59d3791f6fd7d2dc49c2314449d94207db38a2b86582e9bdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6864 5348 bytes
font_01_sfnt_off00007ab2.bin
cf565c4e6bfeb9a4c347e30cdcc435426523fcec02cf308067bb90d8a3763419		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB2 10152 bytes

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