Malicious PDF — malware analysis report

Static analysis result for SHA-256 309cfc22f2baf40a…

MALICIOUS

PDF

42.1 KB Created: 2020-08-29 21:17:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99ee42d962c8c27945975a9cb97a7e21 SHA-1: b40ab9f4c8b7dd4f6bfcb605e745181af032b094 SHA-256: 309cfc22f2baf40a17df3a2ff18afc903d2aab16d6b90fd12049544adfe4723a
150 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, including a critical link to a known malicious redirector at 'https://ttraff.cc/wix?keyword=total+war+warhammer+2+black+ark+guide'. The document body, though heavily obfuscated, appears to contain text related to the game 'Total War: Warhammer 2' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier also strongly indicated maliciousness.

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.cc/wix?keyword=total+war+warhammer+2+black+ark+guide
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/joliko.pdf
    • https://cdn.shopify.com/s/files/1/0438/8657/5771/files/20804604970.pdf
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/suwidej.pdf
    • https://cdn.shopify.com/s/files/1/0440/1309/3029/files/likeravasejo.pdf
    • https://static.usrfiles.com/ugd/5b9a87_33866a2574154b0984ba46cf22214db0.pdf
    • https://static.usrfiles.com/ugd/b8c837_f233452c5c7f4ad3997400f5b8f625a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_08ce67292ba04e478bef283720af5827.pdf
    • https://static.usrfiles.com/ugd/76156b_b33db2e493ed4ffd8345387635a570d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_b680fbf460504cafb5037c88a2e77bf4.pdf
    • https://static.usrfiles.com/ugd/b8c837_e8a828d5db344b34b4a16364c9714aa7.pdf
    • https://cdn.shopify.com/s/files/1/0448/0460/4066/files/how_to_comment_in_latex.pdf
    • https://cdn.shopify.com/s/files/1/0435/4048/0164/files/download_a_list_of_comparative_and_superlative_adjectives.pdf
    • https://cdn.shopify.com/s/files/1/0428/1139/2167/files/81873012110.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_off000065e5.bin
ea69be96cac517cb1f523d4c4c77f34b979b2022a66d506a44ff07a5ab32de3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E5 5552 bytes
font_01_sfnt_off000078b0.bin
a47f00784ec49f98d2dc7d22295773a60fddeb0b5673d62c5ea25a7865f83353		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78B0 10292 bytes

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