Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ca354f567343264…

MALICIOUS

PDF

46.2 KB Created: 2020-07-29 12:59:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42190c3354313f487bae082e82af023c SHA-1: cadb72e58367908a8ed893902f875d8895ac3928 SHA-256: 2ca354f567343264f83c89d07e79575ae2273def69b84ee66f895f8f63ac42a3
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm, with the primary purpose of redirecting users to malicious infrastructure. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=box+plot+example+pdf', is flagged as malicious. The document body is heavily obfuscated and does not provide clear textual lures, but the heuristic firings strongly indicate a redirection-based attack.

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=box+plot+example+pdf
    • http://files.alpinedesignsmt.com/uploads/1/3/0/7/130776368/dogipasero-wawusumi.pdf
    • http://files.natepackaging.com/uploads/1/3/1/3/131379256/1ac856.pdf
    • http://files.jillloveslace.com/uploads/1/3/0/9/130969974/dosozuzuw_gunapa_bifevebekam.pdf
    • http://files.jillloveslace.com/uploads/1/3/0
    • https://cdn.shopify.com/s/files/1/0438/4541/9173/files/46624621482.pdf
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/gaxoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/8076/0990/files/ginidusilukenukepuzara.pdf
    • https://cdn.shopify.com/s/files/1/0437/7110/1338/files/63717707598.pdf
    • https://cdn.shopify.com/s/files/1/0431/9952/9121/files/jomusi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0581/2629/files/jirikomexixe.pdf
    • https://cdn.shopify.com/s/files/1/0434/0029/8648/files/98739004912.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/41846287325.pdf
    • https://cdn.shopify.com/s/files/1/0434/8205/4813/files/ludez.pdf
    • https://cdn.shopify.com/s/files/1/0430/9752/2329/files/85862739661.pdf
    • https://cdn.shopify.com/s/files/1/0433/1097/3083/files/wugepajoniwanevekenudore.pdf
    • https://cdn.shopify.com/s/files/1/0432/5123/7022/files/govekokuj.pdf
    • https://cdn.shopify.com/s/files/1/0436/2951/0814/files/98354443125.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_off000076f0.bin
2e6d11ac811e74c97833c206a6cead9b147f24918b5345b275fdcd0b16aa26af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76F0 4664 bytes
font_01_sfnt_off000086de.bin
bc5c6fa079db89187acda00a55936d3bb550acd429043f754e74873dd4876a3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86DE 10800 bytes

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