Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c1c756da48d5869…

MALICIOUS

PDF

47.3 KB Created: 2020-09-01 04:10:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 749117e0310c9176f9c2cad04194ebaa SHA-1: 9ee2c7d88be7be32af44b6845f460907ac1f0266 SHA-256: 3c1c756da48d5869bfa4c8bd4f32f8dc34cd78d6af4a8f9d2d6def93cb13e30a
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used to create link farms for SEO manipulation or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/wix?keyword=leatherworking+leveling+guide+1+375'. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a coordinated effort to distribute content through these means. The primary intent appears to be directing users to potentially harmful external resources.

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/wix?keyword=leatherworking+leveling+guide+1+375
    • https://cdn.shopify.com/s/files/1/0436/4494/4542/files/56705162399.pdf
    • https://cdn.shopify.com/s/files/1/0428/1974/7996/files/vanquisher_medal_terraria.pdf
    • https://cdn.shopify.com/s/files/1/0429/9181/2767/files/allium_cepa_assay.pdf
    • https://cdn.shopify.com/s/files/1/0434/1822/2753/files/connectors_list_with_bangla_meaning.pdf
    • https://static.usrfiles.com/ugd/c63dba_d66e5e9b23434be2afbe290440f16496.pdf
    • https://static.usrfiles.com/ugd/51c472_b66a489d3f65443884b3226071ca7f1f.pdf
    • https://cdn.shopify.com/s/files/1/0438/7697/4747/files/ctet_syllabus_2020_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0436/5818/2809/files/morfologi_ageratum_conyzoides.pdf
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/janesirewogupizo.pdf
    • https://static.usrfiles.com/ugd/6f9b04_13ec25dbb12d4377be541725ed6c0d26.pdf
    • https://static.usrfiles.com/ugd/7a11b0_78e17487e2364c07870de3fd635783d3.pdf
    • https://static.usrfiles.com/ugd/b8c837_71baf34b07de4a609da323efc26e6da5.pdf
    • https://static.usrfiles.com/ugd/cafc24_f46fad09f2da47d580853a7952ff4cf0.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_off00006e66.bin
1c70af09aed745ffbe61dfe050f3a8cffcc515b04fe38dd00141a2ff25344825		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E66 5484 bytes
font_01_sfnt_off00008134.bin
0235cbaf2010558a2d57d7c6f96120fdea16564e794924646891073c3b533b6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8134 15292 bytes

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