Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea2ee662f247446a…

MALICIOUS

PDF

40.2 KB Created: 2020-08-29 21:24:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4dce36acc252786c2ff8606e55e6413 SHA-1: 91ac8f6e4ef77458ac369ff290762ce1d49aef4b SHA-256: ea2ee662f247446a5cc1503ee952b858932875e6dc736c4734a8a55598a01c0f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/wix?keyword=eso+alchemy+guide+clam+gall'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the first being 'https://cdn.shopify.com/s/files/1/0431/5466/9729/files/pemagojepa.pdf'. The document body, though heavily obfuscated, contains the malicious URL, suggesting a lure to entice users to click through to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=eso+alchemy+guide+clam+gall
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0431/5466/9729/files/pemagojepa.pdf
    • https://cdn.shopify.com/s/files/1/0434/7972/8281/files/36602348409.pdf
    • https://cdn.shopify.com/s/files/1/0428/7817/3343/files/vlookup_contains_partial_match_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0437/9020/5090/files/76278146646.pdf
    • https://cdn.shopify.com/s/files/1/0427/4490/5884/files/vaxobegeforep.pdf
    • https://cdn.shopify.com/s/files/1/0432/9255/7467/files/best_video_er_for_mac_online.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/binary_logistic_regression_model.pdf
    • https://static.usrfiles.com/ugd/b8c837_afbed24747424c868d89aeb25c9ee842.pdf
    • https://static.usrfiles.com/ugd/b8c837_59ff829f94c3483a8c4b6a6e784a5410.pdf
    • https://static.usrfiles.com/ugd/b8c837_932a3e4dac5f4f908cf08eeffd8b4eb4.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5206/files/65868435226.pdf
    • https://cdn.shopify.com/s/files/1/0433/8817/4497/files/pupogigolerajewepag.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_off00005e6c.bin
bc67804c334be973f67b3e2c039db1c22f93210b180aa8ec25cd451712e9752f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6C 5316 bytes
font_01_sfnt_off00007068.bin
63904e4a8419de83a2d1a0b535e4ca8f2dcd30aa1f7b4883ee7c4731c3e3c853		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7068 10360 bytes

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