Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf8200bfcea432f2…

MALICIOUS

PDF

43.5 KB Created: 2020-08-29 23:58:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fb8134bfc4d4d256c548438294eba22 SHA-1: d36a25c54e19c4889d18ac1905429cbad2db7af4 SHA-256: cf8200bfcea432f20837119eb5089ecb48597deec53523af72c3c6cdb8b8d0d1
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=que+son+los+derechos+de+segunda+gene'. Additionally, it exhibits a PDF link farm heuristic, with numerous links to other PDFs hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and references to PDF files, reinforcing the lure. The primary attack pattern involves redirecting users to malicious infrastructure.

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=que+son+los+derechos+de+segunda+gene
    • https://cdn.shopify.com/s/files/1/0432/4855/0050/files/fundamentals_of_corporate_finance_3rd_edition_answers.pdf
    • https://cdn.shopify.com/s/files/1/0466/2552/1829/files/eso_artaeum_takeaway_broth.pdf
    • https://cdn.shopify.com/s/files/1/0428/1057/2967/files/aura_kingdom_mobile_sky_tower_guide.pdf
    • https://cdn.shopify.com/s/files/1/0462/7241/3856/files/vavakeroleru.pdf
    • https://cdn.shopify.com/s/files/1/0434/1461/8277/files/matematicas_para_administracin_y_ec.pdf
    • https://static.usrfiles.com/ugd/b8c837_31ab62e2ed9c4746bce29bbd0a9a6965.pdf
    • https://static.usrfiles.com/ugd/b52961_3bb1a1044a87425a88e9b69376c1124c.pdf
    • https://static.usrfiles.com/ugd/cac9e4_eec1f43a75ca44a4969b24b7b519a7c6.pdf
    • https://static.usrfiles.com/ugd/b8c837_997ae683a9c349bf93a1d04be82e9c43.pdf
    • https://static.usrfiles.com/ugd/b8c837_605c73bb4fdf4a62acfc805c535965d3.pdf
    • https://cdn.shopify.com/s/files/1/0434/6131/2676/files/54427606401.pdf
    • https://cdn.shopify.com/s/files/1/0430/0403/5221/files/dibulakebunot.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_off000068fb.bin
e770603a15b1cf0139c57999ed3cae6194844272421a192ebfd8d52fa8c71507		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68FB 5264 bytes
font_01_sfnt_off00007ad3.bin
99dff1c6c28a89e8c642d16960beca80f417587510271f96862634be6e11f333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD3 11368 bytes

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