Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb67c1a2b67e88d3…

MALICIOUS

PDF

35.1 KB Created: 2020-08-05 23:08:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b3d3d6f20e30b00d06630337bc4b090 SHA-1: abd214cfbb33ba6b2eb737f12abb681f1f1938d6 SHA-256: eb67c1a2b67e88d3f2a97192fe7940838725b8d4b6623e473f67925986fd9574
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for a PDF redirector link pointing to ttraff.ru. Additionally, another critical heuristic detected a PDF link farm containing numerous embedded URLs, with the primary one being a Shopify domain. The document body, though heavily obfuscated, contains the malicious URL and several other Shopify-hosted PDF links, suggesting a lure to external content. The presence of a malicious redirector and a link farm indicates an attempt to lead the user to a compromised or malicious site.

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=blessed+be+god+satb+pdf
    • http://files.simplejoys-photography.com/uploads/1/3/2/6/132695694/bfcf59cfea.pdf
    • http://mixoki.yogadharmadowntown.com/uploads/1/3/0/8/130874276/jupujejopino.pdf
    • http://files.jelopez-stage.com/uploads/1/3/1/8/131856065/a485fc9.pdf
    • http://files.sa-child.org/uploads/1/3/0/8/130814682/rokolazevim.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5013/files/vazinosulotarolefib.pdf
    • https://cdn.shopify.com/s/files/1/0428/9540/9311/files/getus.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0141/files/lua_console_log.pdf
    • https://cdn.shopify.com/s/files/1/0433/2693/1099/files/spleen_de_paris_baudelaire.pdf
    • https://cdn.shopify.com/s/files/1/0434/3152/6557/files/19387152895.pdf
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/90678893116.pdf
    • https://cdn.shopify.com/s/files/1/0433/7755/7660/files/9463868310.pdf
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/23938819273.pdf
    • https://cdn.shopify.com/s/files/1/0431/8488/1827/files/jekomunero.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/babovawazipojagug.pdf
    • https://cdn.shopify.com/s/files/1/0433/6379/5096/files/wemuwopolavarison.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_off00004b88.bin
22a3a021cd51887b40be5771efbb3842781129e887d4225a5b39f07fe1b1c005		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B88 5304 bytes
font_01_sfnt_off00005da1.bin
b21fadee92a8904569eda3da4dba73ddb3f11f88cb8b4b8fb0685f8d8e1acf04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA1 9924 bytes

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