Malicious PDF — malware analysis report

Static analysis result for SHA-256 a183e00cd7c6ad6e…

MALICIOUS

PDF

34.6 KB Created: 2020-09-01 07:07:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87035a88bd8b16cf975eb9941cd0b1da SHA-1: 8dd024199bef30f0188ab3e1676d7c62f4401b65 SHA-256: a183e00cd7c6ad6efef236b817cf654339528d1309c0f955a0f7a00d9ae713f6
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Copd gold guidelines 2012 pdf' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm heuristic further indicates an attempt to distribute content or traffic.

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=copd+gold+guidelines+2012+pdf
    • https://static.usrfiles.com/ugd/99afdc_24eb0f9de64e44b78dbd4b7d537565e1.pdf
    • https://static.usrfiles.com/ugd/8ab72e_093bae4e69f44788977248a4861cfe75.pdf
    • https://static.usrfiles.com/ugd/c8d394_d2a098120f6d46e1ab2ad0c99b413561.pdf
    • https://cdn.shopify.com/s/files/1/0434/9945/4628/files/gipugumokorirolaju.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mituvazejuremoposanizama.pdf
    • https://cdn.shopify.com/s/files/1/0433/3204/2920/files/dasixux.pdf
    • https://static.usrfiles.com/ugd/3f0e57_9e074e244d0e464da0218c76bf99dc6f.pdf
    • https://static.usrfiles.com/ugd/3ceeb9_8dc40fbb1ed2435584dacc3c53af9bcc.pdf
    • https://static.usrfiles.com/ugd/d216cb_89b8e679564f43639294cdc7ed00cf06.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0bbb218a3344a518b3ca18c344ff1bf.pdf
    • https://static.usrfiles.com/ugd/a86d68_83af7c30cdc842fa96127c7d8acc7169.pdf
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/tutamurexe.pdf
    • https://cdn.shopify.com/s/files/1/0434/0819/5738/files/allergic_action_plan.pdf
    • https://cdn.shopify.com/s/files/1/0434/4466/6529/files/ruvogu.pdf
    • https://cdn.shopify.com/s/files/1/0440/5159/5429/files/81809354878.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/10721700661.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_off00004b6b.bin
54df751282966bed5acc04ff31324f3e0b863f35982dce97efdd58cd6e3ce6d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B6B 5136 bytes
font_01_sfnt_off00005d08.bin
bc118b44ead800648b733d50b885d2a636f109cee38cd0beecb908eb7893043f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D08 9600 bytes