Malicious PDF — malware analysis report

Static analysis result for SHA-256 92ed29af45adc10c…

MALICIOUS

PDF

49.7 KB Created: 2020-08-31 01:25:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61a9501f0bdcbecff1db55d8ae0c47f4 SHA-1: cb3c1a9875bdcd059cc39da1ef8b44deb9bbc5e2 SHA-256: 92ed29af45adc10c6168891160105e09dbfd307f3c4c1eda52f9c919d74db792
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=parches+chenille+personalizados+para'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The file also exhibits characteristics of a PDF link farm, with numerous embedded URLs, suggesting an attempt to manipulate search engine results or distribute content through a network of links. No scripts were extracted from this sample.

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=parches+chenille+personalizados+para
    • https://static.usrfiles.com/ugd/f09a9d_944c15d93d7047c9b5c086555a397168.pdf
    • https://static.usrfiles.com/ugd/225520_ca4c2f7bbd7d4e91b11ad768f9677474.pdf
    • https://static.usrfiles.com/ugd/6924eb_75e5f21b975f4511a82c87f69b098e08.pdf
    • https://cdn.shopify.com/s/files/1/0432/8456/2084/files/ronopikodajumo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2130/2946/files/exercicios_resolvidos_capacitores.pdf
    • https://cdn.shopify.com/s/files/1/0430/3906/4225/files/46897588938.pdf
    • https://cdn.shopify.com/s/files/1/0433/6225/5006/files/wofotivo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9302/5183/files/59595738098.pdf
    • https://cdn.shopify.com/s/files/1/0431/9284/4448/files/pidimuzebilawajumaferi.pdf
    • https://static.usrfiles.com/ugd/21e6f2_9dec3636ef744e749cb7ff128b48fdb8.pdf
    • https://static.usrfiles.com/ugd/b444d4_72cd94c8c6bc41aaa3f5d03597484e0d.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_off00008192.bin
007f713e61621f6df486a4f280753ac1f51060cf59a04995d3b48c2d146c8dc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8192 5212 bytes
font_01_sfnt_off00009343.bin
7b0c8a4bfb3b5b8fbbb87233a1f738fc879e038128fca89e2cd8872e4dfe9c43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9343 11544 bytes

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