Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4ea72213ff73b73…

MALICIOUS

PDF

40.0 KB Created: 2020-08-31 07:58:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3edda3cca4ca491008f20cbcaf31d4d1 SHA-1: e017a67f3ba82710ed82a92f69f87e23b37c9408 SHA-256: e4ea72213ff73b73b809ba93edcb384fcac1ff2a37845b49f4fa5215d1201bc5
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a common technique for SEO poisoning or redirecting users to malicious sites. One of the embedded URLs, 'https://ttraff.club/wix?keyword=power+rangers+wild+prime', is flagged as a known malicious redirector. The document body itself is heavily obfuscated but contains references to the same URL and numerous Shopify-hosted PDF links, suggesting a link farm or redirection scheme.

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.club/wix?keyword=power+rangers+wild+prime
    • https://cdn.shopify.com/s/files/1/0463/3637/6993/files/38100333702.pdf
    • https://cdn.shopify.com/s/files/1/0430/4162/0119/files/asciidoctor_theming_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0808/9509/files/74089916614.pdf
    • https://cdn.shopify.com/s/files/1/0432/3957/1611/files/ruwoji.pdf
    • https://cdn.shopify.com/s/files/1/0431/7092/2652/files/nalemojofamuf.pdf
    • https://cdn.shopify.com/s/files/1/0434/0583/6444/files/estadistica_anderson_sweeney_williams.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/jonurufitov.pdf
    • https://cdn.shopify.com/s/files/1/0459/9237/8527/files/fegew.pdf
    • https://cdn.shopify.com/s/files/1/0437/0454/9544/files/salesforce_admin_maintenance_exam_spring_19_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/5491/3943/files/vademonenitax.pdf
    • https://cdn.shopify.com/s/files/1/0444/7944/7207/files/fomubiredotubizepebonafu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5768/4375/files/64802019716.pdf
    • https://cdn.shopify.com/s/files/1/0438/4971/1781/files/vakowaponafomopezegirovav.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3639/files/prueba_de_bondad_de_ajuste_ejercicios_resueltos.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_off00005ef6.bin
143576e51a78d2b042701b01a69275f64d7dae256e6438594d39b9124d69af83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF6 5372 bytes
font_01_sfnt_off00007131.bin
c9407df453b526854b8bd8e148b6f3cd061f11290a17fcfcfac731c3fb30936f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7131 9996 bytes

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