Malicious PDF — malware analysis report

Static analysis result for SHA-256 93c0aa7f0c2ace91…

MALICIOUS

PDF

41.8 KB Created: 2020-09-11 13:20:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44277617edcda9c20794b4ac303d7240 SHA-1: b1e70f26f2850968c5fefab2c11e007ff82b9b2d SHA-256: 93c0aa7f0c2ace91912c46ad585356a4ec81f936057b7848487658e111e5bede
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution.

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.me/wix?keyword=capacitor+in+series+and+parallel+worksheet
    • https://static.usrfiles.com/ugd/9f06f8_56af8bb05bca4501842cdcdbf99ecec6.pdf
    • https://static.usrfiles.com/ugd/2072cd_fc0a68afc4ec46a9bfa292976d078c49.pdf
    • https://static.usrfiles.com/ugd/ce77c6_56826c1d71a04e7185301f5667f84646.pdf
    • https://cdn.shopify.com/s/files/1/0439/7616/3486/files/54010068055.pdf
    • https://cdn.shopify.com/s/files/1/0434/9886/4800/files/3_conceptos_de_economia.pdf
    • https://cdn.shopify.com/s/files/1/0431/0132/3420/files/4973531925.pdf
    • https://cdn.shopify.com/s/files/1/0430/4925/5061/files/88726309464.pdf
    • https://cdn.shopify.com/s/files/1/0434/7900/7398/files/gstreamer_raspberry_pi.pdf
    • https://static.usrfiles.com/ugd/b8c837_2fe25d6526324c378ceb3e72ea834f89.pdf
    • https://static.usrfiles.com/ugd/9219f8_b21708f7da7f46d880c48b60fae9bca4.pdf
    • https://static.usrfiles.com/ugd/37428b_750ef15c54a94cd4b16466b0a237e265.pdf
    • https://static.usrfiles.com/ugd/8e1900_4379c7efc07d440589048c929f86f132.pdf
    • https://static.usrfiles.com/ugd/d954c5_ff05dd56e5764e2480897af7d6714adc.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_off00005c0e.bin
415b418c0c4c6fa427e7c59d99d46fcd0403dc47b4795dea87c6da3314b7539a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C0E 5220 bytes
font_01_sfnt_off00006dd3.bin
91f2dbc146ad941bd79432a9dddd1fcd9d52423b0814922cc38d6a971f931133		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD3 14156 bytes

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