Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0f887c8114096fa…

MALICIOUS

PDF

44.7 KB Created: 2020-08-30 07:25:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a20604c6de79ad8139297e8101324527 SHA-1: 68811566d8d00931644285e81434b67daf3ad317 SHA-256: e0f887c8114096fa46e25871198426fee4db15c7626aa9392bbaa85c558f6b9e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to ttraff.ru. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/wix?keyword=days+of+our+lives+12-10-15, suggesting a lure to a malicious site. The presence of numerous other links, including to shopify.com, indicates a link farm strategy. No scripts were extracted, but the primary attack pattern is redirection to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/wix?keyword=days+of+our+lives+12-10-15
    • https://cdn.shopify.com/s/files/1/0428/6945/7063/files/pool_party_flyer_free_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/4963/2415/files/eaz_lift_recurve_r3.pdf
    • https://cdn.shopify.com/s/files/1/0439/3569/5016/files/74144785683.pdf
    • https://cdn.shopify.com/s/files/1/0437/3220/5722/files/conjugacion_de_verbos_auxiliares_en_ingles.pdf
    • https://static.usrfiles.com/ugd/804ff6_8e217aafd92c4429be246073fc338bc6.pdf
    • https://static.usrfiles.com/ugd/9219f8_f6df1da3bb0b492486ba5866cb4a7ec6.pdf
    • https://static.usrfiles.com/ugd/90c678_fa4f1c2937fe47d5b40d4757d4b3d1ba.pdf
    • https://static.usrfiles.com/ugd/b8c837_705e2a173ea04ec4a9abee93b8aa70f1.pdf
    • https://static.usrfiles.com/ugd/b8c837_34572aa648de458f823d9caeefdf3df6.pdf
    • https://static.usrfiles.com/ugd/b8c837_9efea030c12f4ddcbf79c469a37b49f8.pdf
    • https://cdn.shopify.com/s/files/1/0437/1755/8426/files/mixed_adverbs_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0432/0791/7729/files/adhyatma_ramayana_in_kannada.pdf
    • https://cdn.shopify.com/s/files/1/0428/7440/5023/files/ways_to_teach_vocabulary.pdf
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/45459313181.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_off0000672e.bin
d4c970a85c0207df4184751132db912a73685c4419eb5085cfeb6f57b6796f21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x672E 5404 bytes
font_01_sfnt_off000079bf.bin
2aee3cd00e0d3020b66b89e277cc4b4307749f4b24ba76bcc43f22cf3301be43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79BF 13432 bytes

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