Malicious PDF — malware analysis report

Static analysis result for SHA-256 d01d29c007fe7c91…

MALICIOUS

PDF

40.6 KB Created: 2020-09-02 09:25:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 880fde55e0ed68f4a66f51aea7f46c18 SHA-1: ef33232d5cda63d1ede126e3289e65e12cccf052 SHA-256: d01d29c007fe7c91a23b617af6f6b69969e189f307236e6ae70ac8cf39ac5743
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO spam and phishing campaigns. One critical heuristic identified a link to a known malicious redirector, `https://ttraff.cc/wix?keyword=6th+grade+math+worksheets+fractions+and+decimals`, which is disguised as educational material. The document body also contains this URL and other links to PDF files, suggesting a link farm designed to drive traffic to malicious infrastructure. No scripts were extracted, but the primary attack vector is the embedded malicious URL.

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=6th+grade+math+worksheets+fractions+and+decimals
    • https://static.usrfiles.com/ugd/4bb894_c515aaa9bed5478ab3ae0418579f78d0.pdf
    • https://static.usrfiles.com/ugd/b8c837_0ed4e5c9e25a441da7a1e67086ae9b1a.pdf
    • https://static.usrfiles.com/ugd/9edd50_0223db226a134fd4a633e149b7b5c31d.pdf
    • https://static.usrfiles.com/ugd/b8c837_50c6e22575b8420095f916db2e0d5244.pdf
    • https://static.usrfiles.com/ugd/4f270c_90cac35098ed4d2497005af33ef20286.pdf
    • https://cdn.shopify.com/s/files/1/0434/5734/7749/files/84983466771.pdf
    • https://cdn.shopify.com/s/files/1/0465/2957/7118/files/bebefamozufome.pdf
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/foporif.pdf
    • https://cdn.shopify.com/s/files/1/0434/6114/8837/files/jisewawikow.pdf
    • https://cdn.shopify.com/s/files/1/0438/9116/3291/files/blood_cancer_medical_report_images.pdf
    • https://cdn.shopify.com/s/files/1/0432/7247/0686/files/panemexeporifowazetanirax.pdf
    • https://cdn.shopify.com/s/files/1/0428/4606/0710/files/fukataxoduboxipibefo.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_off00006003.bin
a6dd1cc902d05a15f1a00911ae555693f74012d0439e25ad882c1c3395f32a45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6003 5652 bytes
font_01_sfnt_off00007326.bin
d5f6e4ba68487334a3e133450904eb5acbaf3abde37bd65da366be0714b6fab2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7326 10060 bytes

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