Malicious PDF — malware analysis report

Static analysis result for SHA-256 e01988516fb0393c…

MALICIOUS

PDF

70.6 KB Created: 2020-08-29 22:44:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f7e75cd89bcc8e52e53108d2703528a SHA-1: 6b27aa976a62e052e11f10b460403d692eb751bf SHA-256: e01988516fb0393ce53d9e246072967450f057b4e58378de34a02af961373373
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=lilus+kikus+pdf+completo'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, also contains the same malicious URL and several benign-looking PDF URLs, suggesting a deceptive lure. The primary intent appears to be redirecting the user 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.ru/wix?keyword=lilus+kikus+pdf+completo
    • https://static.usrfiles.com/ugd/b8c837_41d13a3249a24646b06d8eedd46bd597.pdf
    • https://static.usrfiles.com/ugd/b8c837_a207f8817be44831a1eba6f3479d8ed8.pdf
    • https://static.usrfiles.com/ugd/b8c837_e78df294ef654ab2b940ce7421fba450.pdf
    • https://static.usrfiles.com/ugd/b8c837_b71178487f704287a6a27ae5abc15c90.pdf
    • https://cdn.shopify.com/s/files/1/0433/6215/6702/files/aneurisma_de_la_aorta.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sejil.pdf
    • https://cdn.shopify.com/s/files/1/0438/6439/1845/files/31043452794.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3257/files/apache_cassandra_upgrade_guide.pdf
    • https://cdn.shopify.com/s/files/1/0447/9621/5456/files/adventurer_s_vault_2.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52325197595.pdf
    • https://cdn.shopify.com/s/files/1/0434/2520/2325/files/calculus_book_by_thomas_finney.pdf
    • https://cdn.shopify.com/s/files/1/0434/5397/2630/files/25728977614.pdf
    • https://cdn.shopify.com/s/files/1/0428/1368/5927/files/8609396789.pdf
    • https://cdn.shopify.com/s/files/1/0437/4432/9877/files/bavizi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6803/1143/files/jetexorigumol.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_off0000d963.bin
f5f736d7f1acb31206d4638fc556c6be152a365f84c2dee9f562236920719dc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD963 5000 bytes
font_01_sfnt_off0000ea58.bin
1503455587321ff327f4b6ef678a22daef87b7792492b95b664a1a37970b2748		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA58 10220 bytes

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