Malicious PDF — malware analysis report

Static analysis result for SHA-256 288a4eb956f65ddf…

MALICIOUS

PDF

50.6 KB Created: 2020-08-29 13:11:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49fc74fb249cd4c40cb767cae33fd7db SHA-1: 594975c7fd2e5bf48f30868fbb6baed0f1811671 SHA-256: 288a4eb956f65ddff079ede50ef7e15112ad809e8788ff8eb09dc7f8f612e0f9
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.cc/wix?keyword=poutre+de+bamako'. Additionally, another critical heuristic indicates a PDF link farm, suggesting the document is designed to host numerous external links. The document body, though heavily obfuscated, contains the same malicious URL. The primary intent appears to be luring the user to the malicious redirector.

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=poutre+de+bamako
    • https://static.usrfiles.com/ugd/b8c837_5c16c48e193c450a899b13d3661be91d.pdf
    • https://static.usrfiles.com/ugd/b8c837_f2dd31e295c840e3af053e1176413e6c.pdf
    • https://static.usrfiles.com/ugd/b8c837_cee671552ef741289eafb298edd3806e.pdf
    • https://static.usrfiles.com/ugd/b8c837_7430fe01572444d5a71cf611f5bbdda0.pdf
    • https://cdn.shopify.com/s/files/1/0431/1485/6610/files/locate_template_wordpress.pdf
    • https://static.usrfiles.com/ugd/b8c837_d712d579120a4546abade56a3f6e0394.pdf
    • https://static.usrfiles.com/ugd/b8c837_0d99c5cff958414d9f97e2035af8e32a.pdf
    • https://static.usrfiles.com/ugd/b8c837_304225c57c4f469bb25653ad08b00438.pdf
    • https://static.usrfiles.com/ugd/b8c837_bb351efe6639463983164d0d75870432.pdf
    • https://cdn.shopify.com/s/files/1/0440/6935/5670/files/tiwedivelekamonuxebe.pdf
    • https://cdn.shopify.com/s/files/1/0436/7430/4662/files/85414020057.pdf
    • https://cdn.shopify.com/s/files/1/0434/0069/1866/files/simple_electronic_projects_with_circuit_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0431/8131/0114/files/mugelukopuraweg.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/
    • https://cdn.shopify.com/s/files/1/0434/0069/1866/files/simple_electroni

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b46.bin
5590f38571a7c388c6c202875ad9534263e964075f56be4ec6f2151368c4c119		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B46 4968 bytes
font_01_sfnt_off00008c08.bin
6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C08 1800 bytes
font_02_sfnt_off00009498.bin
6cfabf34490b3cc8e8de3815b77204f40070095b8a01d4634034639772d04302		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9498 12652 bytes

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