Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d3ecf3e6610c6c3…

MALICIOUS

PDF

40.6 KB Created: 2020-08-04 07:09:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 552bb0ed7a01704699495fcf7f771e1b SHA-1: c1b4709949bef5c4bce9dad22d44b77e2a2a8ccd SHA-256: 2d3ecf3e6610c6c386093af4b66ba16d01b1e463e924b3f418e34bb279028045
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic identified a link to `ttraff.com`, a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'embodied cognition theory pdf' and the `ttraff.com` URL, suggesting a lure to trick users into clicking through to potentially malicious content. The primary attack pattern involves directing users to external, potentially harmful, websites.

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.com/pify?keyword=embodied+cognition+theory+pdf
    • http://files.lumianna.fi/uploads/1/3/0/8/130874422/1364949.pdf
    • http://bujopov.cowboys4heroes.com/uploads/1/3/2/3/132303238/semovawilulanox_wisesefe.pdf
    • http://files.besimplytimeless.com/uploads/1/3/0/8/130813887/xerof-bakamaxix.pdf
    • https://cdn.shopify.com/s/files/1/0427/5005/0460/files/gixiworitufepokitonurer.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/91994979428.pdf
    • https://cdn.shopify.com/s/files/1/0429/0769/7305/files/lijirazuken.pdf
    • https://cdn.shopify.com/s/files/1/0430/4922/2298/files/91760696159.pdf
    • https://cdn.shopify.com/s/files/1/0439/2094/9403/files/15361347345.pdf
    • https://cdn.shopify.com/s/files/1/0434/8179/2677/files/31384651676.pdf
    • https://cdn.shopify.com/s/files/1/0434/1625/6677/files/jegivutibut.pdf
    • https://cdn.shopify.com/s/files/1/0432/5729/9097/files/fulapaziwinobavibil.pdf
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/68928030946.pdf
    • https://cdn.shopify.com/s/files/1/0437/0097/7816/files/derapigasino.pdf
    • https://cdn.shopify.com/s/files/1/0430/6668/7639/files/foxezugorovenub.pdf
    • https://cdn.shopify.com/s/files/1/0431/3789/2509/files/57982885697.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xuvoba.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_off00006388.bin
003f7ae4d5772da8aa59116323d72a1cf134a32e7dd2f8820fdfcb388c61d95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6388 5348 bytes
font_01_sfnt_off0000759d.bin
3454b0aec63f22bd4a5a89595b70c7b2ede1177319f6f062fcc4b27178b88213		 pdf-font-stream PDF embedded font (sfnt) at offset 0x759D 9416 bytes

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