Malicious PDF — malware analysis report

Static analysis result for SHA-256 27189afb4d9133ad…

MALICIOUS

PDF

46.2 KB Created: 2020-08-24 02:24:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 491f3060075566f46c68dc679597587c SHA-1: c8911d695ddb45888c1ab844692bf775be132abe SHA-256: 27189afb4d9133add8860fdc77a91b24bc04dbb45a228526ecdf42d426c8b16b
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM indicating a link farm. One of these links, ttraff.cc, is flagged as a malicious redirector. The document body contains garbled text but also includes the URL https://ttraff.cc/pify?keyword=evernote+gtd+template, suggesting a lure related to productivity templates. The primary attack pattern appears to be SEO poisoning or redirecting users to malicious sites through a large number of external links.

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.cc/pify?keyword=evernote+gtd+template
    • http://xizer.paradigmboxers.com/uploads/1/3/0/7/130775639/8354221.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gevuruliwineda.pdf
    • https://cdn.shopify.com/s/files/1/0434/7058/6016/files/21684019494.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rapuz.pdf
    • https://cdn.shopify.com/s/files/1/0432/5064/7204/files/79394202849.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tevedizulav.pdf
    • https://cdn.shopify.com/s/files/1/0462/1929/6922/files/saxob.pdf
    • https://cdn.shopify.com/s/files/1/0431/6348/4315/files/gopipavamidogenukoledebez.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/jisozal.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32878299647.pdf
    • https://cdn.shopify.com/s/files/1/0450/7097/5128/files/activating_and_deactivating_groups.pdf
    • https://cdn.shopify.com/s/files/1/0437/9482/5376/files/60298093199.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53151925343.pdf
    • https://cdn.shopify.com/s/files/1/0428/2017/3983/files/sonda_vesical_intermitente.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_off0000777d.bin
5aca4fc1a279cd01e8cefeb4bd8c49e66c33ac9904bb8586330ebd1279ead276		 pdf-font-stream PDF embedded font (sfnt) at offset 0x777D 5120 bytes
font_01_sfnt_off000088d6.bin
46ea4bc0bfb96bc0baaea4cfdc08059ea8ae3be757c5b0e427c503b4f2400853		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88D6 10308 bytes

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