Malicious PDF — malware analysis report

Static analysis result for SHA-256 d31e766628ef780f…

MALICIOUS

PDF

52.7 KB Created: 2020-08-28 04:08:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84b3739ecfd5f362f7501bf31bd5322b SHA-1: 97f0a2b033c12879a5d723c393cee0db3867f7e5 SHA-256: d31e766628ef780f93e4c8117dae9fe6e47e879b7689b80af68bbf7d3951d18c
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.link/pify?keyword=soluciones+isotonicas+uso+clinico'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, with the first identified as 'https://cdn.shopify.com/s/files/1/0430/6026/5117/files/tanoduzolexilaneb.pdf'. The document body contains obfuscated text and the identified URLs, suggesting a social engineering attempt to redirect users to potentially malicious content.

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.link/pify?keyword=soluciones+isotonicas+uso+clinico
    • http://files.theradiancerefinery.com/uploads/1/3/1/4/131406114/16ce54215.pdf
    • http://files.lingpuisze.com/uploads/1/3/1/6/131606165/4296724.pdf
    • http://files.sampevclt.org/uploads/1/3/1/3/131380440/mikaluges-rokixegedobuloj-leneg.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/tanoduzolexilaneb.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/wowibunilolidogawolaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/0479/5800/files/xotevos.pdf
    • https://cdn.shopify.com/s/files/1/0429/1143/2867/files/26681715208.pdf
    • https://cdn.shopify.com/s/files/1/0433/7028/3173/files/cfa_level_2_mock_exam.pdf
    • https://cdn.shopify.com/s/files/1/0428/5965/9420/files/mozoraxupivevepa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5317/0339/files/cuento_de_peter_pan_en_ingles.pdf
    • https://cdn.shopify.com/s/files/1/0452/0253/8647/files/86113484717.pdf
    • https://cdn.shopify.com/s/files/1/0439/8238/9406/files/chaldean_numerology_book.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c22.bin
2be888a6ff2acc0897678333dbdc8a2911bd42b371d8ea475218da84cf358f97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C22 4680 bytes
font_01_sfnt_off00007c09.bin
beebb2647b254e64ff46f722d3ca4dd6dcfa2cd0663e8becbd0f2638bb9c859a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C09 11212 bytes
font_02_sfnt_off0000a0d1.bin
ee989ca3c01167a929a766065888a0399def1744bbc45a0f6c3b11f69e640321		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0D1 16076 bytes
font_03_sfnt_off0000b57b.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB57B 4324 bytes

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