Malicious PDF — malware analysis report

Static analysis result for SHA-256 a87a37276e6c71d7…

MALICIOUS

PDF

35.1 KB Created: 2020-09-03 04:04:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44c73c49d665c43dc5ca7f36cd6d2e95 SHA-1: a8402fbdfef746af2f33cc83e9bdb69411add51f SHA-256: a87a37276e6c71d712fd128f0f36be6511a6e57635fce1b6b11aa30a1af945e8
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, a technique often used for SEO spam or to direct users to malicious websites. One of the embedded URLs, 'https://ttraff.link/wix?keyword=information+booklet+synonyms', is flagged as a known malicious redirector. While many other links point to benign Shopify domains, the presence of the malicious redirector indicates a likely attempt to lead the user to a harmful destination.

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/wix?keyword=information+booklet+synonyms
    • https://cdn.shopify.com/s/files/1/0432/3128/1312/files/laxamepinotaxunigoja.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/sasusokukipuminak.pdf
    • https://cdn.shopify.com/s/files/1/0437/7706/5121/files/c_concatenate_strings.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7992/files/61627591724.pdf
    • https://cdn.shopify.com/s/files/1/0430/7792/7072/files/bajipirixorafanopama.pdf
    • https://static.usrfiles.com/ugd/7e84b7_d9c34145feca4d1ea3a49aea7b6e9098.pdf
    • https://static.usrfiles.com/ugd/b8c837_eb85a69704e54eceb19bf28d159057f5.pdf
    • https://static.usrfiles.com/ugd/d17951_e176cf643e8443b5a7e271f25eeddd73.pdf
    • https://static.usrfiles.com/ugd/98e2de_1cf4c3ffd678476fa20021e05b80bd61.pdf
    • https://cdn.shopify.com/s/files/1/0433/0966/2366/files/nelovipojuwato.pdf
    • https://cdn.shopify.com/s/files/1/0435/1551/0938/files/python_convert_webpage_to.pdf
    • https://cdn.shopify.com/s/files/1/0436/5985/3977/files/kubimezarukipirepiluko.pdf
    • https://cdn.shopify.com/s/files/1/0428/0470/7491/files/90713151524.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_off00004b04.bin
6944bb5882f9b3b2741cb1013e8c6ece8691dc8ec127936c037d484ba6da1486		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B04 5156 bytes
font_01_sfnt_off00005c81.bin
130584d7838d9355020cfcdb62be73b0f20db070a3a0389c578fb859657daffc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C81 10376 bytes

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