Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bea6b6538f1aaba…

MALICIOUS

PDF

44.7 KB Created: 2020-09-02 03:17:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6267a6e964076b069f801d127753ef3a SHA-1: 60cbab62b13c676211230a1cd2086ee4a8d9f432 SHA-256: 9bea6b6538f1aaba009cd0b265a1e5446329307ee4a6a32ec00ef9ed9d08fb81
128 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with many links pointing to Shopify domains, likely for SEO poisoning. One critical heuristic indicates a malicious redirector link, specifically `https://ttraff.cc/wix?keyword=excel+product+catalog+template+free`, which is presented as a lure for a free Excel product catalog template. This suggests a phishing or scam attempt to redirect users to malicious content.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=excel+product+catalog+template+free
    • https://cdn.shopify.com/s/files/1/0431/9212/3556/files/pride_and_holmes_sociolinguistics.pdf
    • https://cdn.shopify.com/s/files/1/0440/8085/7253/files/99292875250.pdf
    • https://cdn.shopify.com/s/files/1/0428/6427/9718/files/leaked_snapchat_by_location.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/57681813369.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/frases_utiles_en_ingles_para_viajar.pdf
    • https://static.usrfiles.com/ugd/b8c837_d38277e2a9b847398950cba23cbe59a6.pdf
    • https://static.usrfiles.com/ugd/3bf302_ae5464d7d8324048ad65f3c38d213ccf.pdf
    • https://static.usrfiles.com/ugd/70a38d_3bdc65aff7e147f3bcca82dbd89e4c76.pdf
    • https://static.usrfiles.com/ugd/b8c837_1d50b7e52fc346ba9299f91c652bb6f6.pdf
    • https://cdn.shopify.com/s/files/1/0428/1561/9239/files/54835888600.pdf
    • https://cdn.shopify.com/s/files/1/0429/2663/7223/files/latibesagazavalowero.pdf
    • https://cdn.shopify.com/s/files/1/0447/6780/5591/files/nodasiranirax.pdf
    • https://cdn.shopify.com/s/files/1/0433/8899/3699/files/92828059237.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_off0000705d.bin
31ee9520d42e196fe8fb4c0334c1394a206f67e0c3df93ee3a6c50a47b941095		 pdf-font-stream PDF embedded font (sfnt) at offset 0x705D 5324 bytes
font_01_sfnt_off0000826c.bin
69e4dd62879ac1821f34d75a6525dbe8c205e932e51dc4532849095363c25afe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x826C 10332 bytes

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