Malicious PDF — malware analysis report

Static analysis result for SHA-256 e03a3693bdb18ee7…

MALICIOUS

PDF

40.8 KB Created: 2020-08-06 04:11:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 893599fe0ce918092f851eb1d150402a SHA-1: a9451ecc64e5ca811db51cc1fd1bfb55577c2ecc SHA-256: e03a3693bdb18ee7c4e8f62d75a8eb5f1d15e60e16a70332e55a18e64e324065
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.com/pify?keyword=cumulative+sum+control+chart+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user 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.com/pify?keyword=cumulative+sum+control+chart+pdf
    • http://files.yestojesus.net/uploads/1/3/1/3/131378868/pusimugemawifotake.pdf
    • http://files.rachelsvineyardtucson.org/uploads/1/3/0/9/130969034/3629169.pdf
    • http://files.especiallyforyou1.com/uploads/1/3/1/4/131409909/1319629.pdf
    • https://cdn.shopify.com/s/files/1/0433/6012/5080/files/19932973561.pdf
    • https://cdn.shopify.com/s/files/1/0432/7879/4920/files/tedopakem.pdf
    • https://cdn.shopify.com/s/files/1/0428/4373/4172/files/85287421622.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/13903316047.pdf
    • https://cdn.shopify.com/s/files/1/0438/5862/4672/files/4288195961.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/naxonimibepi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/1676685594.pdf
    • https://cdn.shopify.com/s/files/1/0430/2287/6826/files/61782732935.pdf
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/areas_and_volumes_of_geometric_shapes.pdf
    • https://cdn.shopify.com/s/files/1/0440/6919/1832/files/tokozewopa.pdf
    • https://cdn.shopify.com/s/files/1/0429/0487/9271/files/74318744998.pdf
    • https://cdn.shopify.com/s/files/1/0431/4716/5850/files/kiziguretofogevadut.pdf
    • https://cdn.shopify.com/s/files/1/0439/1842/6267/files/sunab.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_off000057b3.bin
ba6774656f891c3282418dcb124f6e124bd83db72dfafa36b5101a10c7719472		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57B3 5360 bytes
font_01_sfnt_off000069c6.bin
fe28b9267229f15844451b730d6c0307fbf9c19857bece5568e840b8f4c6f0ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69C6 14220 bytes

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