Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c8ef42b972f9d72…

MALICIOUS

PDF

45.0 KB Created: 2020-08-15 01:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52a434fa86476f17a83e9f5b95e581b8 SHA-1: c945369b396a61bbdf4cc1ad605801e5551ee6e7 SHA-256: 4c8ef42b972f9d72119a72687fdf19500bad278f8fc369e9b40042fc4e83644d
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL, suggesting the primary intent is to redirect the user to potentially harmful content. No scripts were extracted, and the PDF structure itself is not inherently malicious beyond the embedded links.

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.cc/pify?keyword=alisha+chinoy+songs+free
    • http://files.mediterranean-maudsley-forum.co.uk/uploads/1/3/1/6/131637362/5968222.pdf
    • http://files.susanlane-gardenscapes.com/uploads/1/3/1/0/131070398/fapineliverigil_siroved_lugara.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1637/files/birads_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/2664/4125/files/adjective_clause_lesson.pdf
    • https://cdn.shopify.com/s/files/1/0432/7496/1059/files/catalizador_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0428/3885/1751/files/online_web_file_to_converter.pdf
    • https://cdn.shopify.com/s/files/1/0434/3234/5765/files/baxi_solo_2_pf_boiler_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/7789/4293/files/totakesomutakudaje.pdf
    • https://cdn.shopify.com/s/files/1/0440/5533/0966/files/92654490998.pdf
    • https://cdn.shopify.com/s/files/1/0440/7105/9608/files/central_park_guillaume_musso_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0433/8876/4316/files/gaxeget.pdf
    • https://cdn.shopify.com/s/files/1/0435/3146/8951/files/bottle_capping_machine.pdf
    • https://cdn.shopify.com/s/files/1/0429/7401/9740/files/tixosupemisabi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0493/5835/files/fuxazunugogoxuwesosu.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_off00006a52.bin
dc075b41972827601de89d16fc49435ab4585fafb2c6dcd97a4452c8a7019eec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A52 5232 bytes
font_01_sfnt_off00007c14.bin
1351a6d1defcd7dc01546b2248f02e1901e43a1aedb04b50bccd2b29ef2ad3b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C14 13804 bytes

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