Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2e2517f8cc3bddd…

MALICIOUS

PDF

45.6 KB Created: 2020-08-31 07:07:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bd9856e19c7e901c8671916ada5a0d2 SHA-1: b38c660b18826f6f71b1eb9dd0ed6a746ef93876 SHA-256: f2e2517f8cc3bddd02b8dd9deeae3bb39735af020eca510e4fde1f9b7889570b
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, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains a URL that matches the redirector heuristic. The presence of numerous links, many pointing to Shopify domains, suggests a link farm designed to obscure the ultimate malicious 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.com/wix?keyword=spalding+portable+backboard+system+54
    • https://cdn.shopify.com/s/files/1/0429/4931/2666/files/walexufa.pdf
    • https://cdn.shopify.com/s/files/1/0434/0121/6163/files/kilobizusivute.pdf
    • https://cdn.shopify.com/s/files/1/0433/0281/3849/files/kifak.pdf
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/lejusozudupil.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_ef59b77062684fda96ce6add042dcb4e.pdf
    • https://static.usrfiles.com/ugd/ab63e3_7d901a613f324802b85e02d7af689904.pdf
    • https://static.usrfiles.com/ugd/6df952_0fe09e4799664241859ee5deda7467ce.pdf
    • https://static.usrfiles.com/ugd/0286dd_2ed0dc4ae20b4af4b3480751b0b0a77c.pdf
    • https://static.usrfiles.com/ugd/24853a_ca5a5e138b124721af79030e0fd34d25.pdf
    • https://cdn.shopify.com/s/files/1/0429/5573/5203/files/74997299692.pdf
    • https://cdn.shopify.com/s/files/1/0435/2580/0087/files/widebo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3721/2319/files/definition_of_armed_conflict.pdf
    • https://cdn.shopify.com/s/files/1/0437/2594/7029/files/android_one_x4_wiki.pdf
    • https://cdn.shopify.com/s/files/1/0448/1505/7062/files/breathing_apparatus_set.pdf
    • https://cdn.shopify.com/s/files/1/0430/1481/5901/files/duzezoritikibusanumepevef.pdf
    • https://cdn.shopify.com/s/files/1/0432/1977/9742/files/82328042451.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34888362351.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_off00006ecd.bin
65e0aa1c75fb6887059c0ffef328a1bf09eea9770eb929c2d67353d875a386d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECD 6016 bytes
font_01_sfnt_off00008332.bin
2c4c0fc777230ed9f1e09e2f624e7e41a8971394d94ec79999ac593eeb5a610a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8332 11952 bytes

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