Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfd698315a8b4a04…

MALICIOUS

PDF

49.8 KB Created: 2020-08-06 21:52:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4114fc0127fa5a493b37781712a1ccb8 SHA-1: f20d542814d75d2bc45c3896641838a4f24c341f SHA-256: bfd698315a8b4a046100b0ea9ee1e410a57f01476b73fd8fb219d78018531383
120 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link pointing to 'ttraff.com', which is known malicious infrastructure. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The document body contains obfuscated text and the embedded URLs suggest a lure to download further malicious content or engage in phishing. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=o+holy+night+adolphe+charles+adam+pdf
    • http://files.tarotartist.net/uploads/1/3/2/6/132681938/8280551.pdf
    • http://files.mwri.co/uploads/1/3/1/4/131453213/f7cdf80926fb.pdf
    • http://files.studentsformedialiteracy.org/uploads/1/3/1/3/131379183/lewenaseberelitir.pdf
    • http://files.meredithbledsoephd.com/uploads/1/3/1/4/131438202/273fe5bbd31.pdf
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/mobojijuduwitepi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/lawenu.pdf
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/2743508840.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/71385396829.pdf
    • https://cdn.shopify.com/s/files/1/0432/1122/7300/files/xusigizizawom.pdf
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/kivaxebiwutosa.pdf
    • https://cdn.shopify.com/s/files/1/0430/5040/1945/files/65001463804.pdf
    • https://cdn.shopify.com/s/files/1/0431/5339/1782/files/35226639957.pdf
    • https://cdn.shopify.com/s/files/1/0433/0812/2270/files/wujaradoju.pdf
    • https://cdn.shopify.com/s/files/1/0437/3184/5271/files/belopudobij.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1716/files/pinewero.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_off00008197.bin
1454cfc5790c623ffff98f93fe3df4f13bbed603229ab624ffa0e56c7f659b59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8197 5700 bytes
font_01_sfnt_off000094d8.bin
c5c7a15852d38fe4d03db0d97a2b136b1de86a898e55dc02b109413ca45e1e84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94D8 10924 bytes

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