Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ecce55d9f0c282d…

MALICIOUS

PDF

45.1 KB Created: 2020-09-02 18:07:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5897d6c6257dda899cb17423ec987fd2 SHA-1: f84b6631b46a6335f1980d58cda5365536727d3d SHA-256: 8ecce55d9f0c282df7e7a0e3c8cadf249533a7e23a6c31deb9391e9cb929aa81
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One of the primary links, 'https://ttraff.me/wix?keyword=yowhatsapp+android+7.+70', is flagged as a malicious redirector. The document body text also contains this URL, suggesting it's the intended lure for the user.

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.me/wix?keyword=yowhatsapp+android+7.+70
    • https://static.usrfiles.com/ugd/af0aa9_3e833b9722d3423386d6c4d0eca37774.pdf
    • https://static.usrfiles.com/ugd/6c8f37_e9c5742e08fb42d4ab43721a7f47b8fc.pdf
    • https://static.usrfiles.com/ugd/d775a9_1069ec3568ea418b848457d0dc0ef97d.pdf
    • https://static.usrfiles.com/ugd/b52961_9835c3531b9b40488e8343613ce3806c.pdf
    • https://static.usrfiles.com/ugd/e4ee87_243d30b53b6a4c109aa9886e465e73e7.pdf
    • https://static.usrfiles.com/ugd/e3c460_3ba42ca0eab34a25b551db42b5e2d090.pdf
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/accounting_texts_and_cases_13th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bovabokuvuxinapuwukiberem.pdf
    • https://cdn.shopify.com/s/files/1/0434/4473/2065/files/50969033082.pdf
    • https://cdn.shopify.com/s/files/1/0435/4614/9023/files/58737192125.pdf
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/proxmox_delete_cluster.pdf
    • https://cdn.shopify.com/s/files/1/0439/0558/1211/files/nokawijufevatojovu.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_off000071bc.bin
bdd573c14ab9a5569d3735143506c77c012fdee48932da2381dc88fca2ff4cb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71BC 5324 bytes
font_01_sfnt_off000083f1.bin
663ecb28db3dd752ee681a0eafaf17c867b47ffd7d8f4c10c1e6ad0d49d270b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83F1 10652 bytes

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