Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c60edfe226b1a13…

MALICIOUS

PDF

50.1 KB Created: 2020-08-07 09:09:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8129c3b8296462cb8cab21d78f5a638b SHA-1: 3ec3ed174d5fbfd770d5bbb6a6513d2f986a8139 SHA-256: 3c60edfe226b1a13a9e2c974989b23f6fa10082a2bea4ffb85c82627d1663b6a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file exhibits characteristics of a link farm, embedding numerous external links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector identified by heuristics. This suggests the document's primary purpose is to lure users to malicious infrastructure.

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/pify?keyword=seguran%25C3%25A7a+em+tecnologia+da+informa%25C3%25A7%25C3%25A3o+pdf
    • http://files.tmeansphotography.com/uploads/1/3/1/4/131437085/d94c038250d6.pdf
    • http://files.sparkycarpetcleaning.com/uploads/1/3/1/1/131163540/jamanopeme-tijemovotusize.pdf
    • http://files.firstchurchnyc.net/uploads/1/3/1/8/131856433/972816.pdf
    • http://files.rubiis.com/uploads/1/3/0/7/130775698/boronofabudog.pdf
    • http://files.firstc
    • https://cdn.shopify.com/s/files/1/0437/2260/4695/files/immunization_definition.pdf
    • https://cdn.shopify.com/s/files/1/0433/7631/2471/files/6922470764.pdf
    • https://cdn.shopify.com/s/files/1/0429/3532/0742/files/46323328141.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/fester_s_quest_nes.pdf
    • https://cdn.shopify.com/s/files/1/0428/7083/3319/files/goluvukawelidana.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/best_cinematography_books.pdf
    • https://cdn.shopify.com/s/files/1/0433/4275/8056/files/repabubuzepa.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/64169537343.pdf
    • https://cdn.shopify.com/s/files/1/0438/2264/5408/files/website_to_converter_chrome.pdf
    • https://cdn.shopify.com/s/files/1/0435/1302/0570/files/20266732845.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_off00007d8a.bin
dc08b14d4aa66fcd62131b1187097d416ca8a1d7598e73188752ec259f4d41f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D8A 5900 bytes
font_01_sfnt_off000090b2.bin
b53f55f80a398ce838086778c0dc4cdc1933a2c1be86b42f9960db39164f6b9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90B2 13492 bytes

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