PDF malware analysis — malicious · 9db4546bdc677f5b

MALICIOUS

PDF

39.2 KB Created: 2020-08-29 05:29:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7d7e08e78c2779d7e85e1262bc05f569 SHA-1: 9544c58cb8292921135f8cf2ce78e59c230883de SHA-256: 9db4546bdc677f5bf4d24f4591dc4cfa70c03757f4553c4772edde6d4ce931e2

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=programming+the+world+wide+web+pdf'. This URL is likely part of a phishing or scam campaign designed to redirect users to malicious content. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of numerous external PDF links, many hosted on 'static.usrfiles.com', suggests a link farm or SEO poisoning tactic to improve search engine ranking for malicious content.

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=programming+the+world+wide+web+pdf
- https://static.usrfiles.com/ugd/b8c837_08bd2b72b5354446996667fdaa216b2d.pdf
- https://static.usrfiles.com/ugd/b8c837_096d39e8cff6457194166db2b973fe61.pdf
- https://static.usrfiles.com/ugd/b8c837_117d75b6444e4070a4938bab2526fbed.pdf
- https://static.usrfiles.com/ugd/b8c837_bde519b93aa7410cbf80b3194cbfbfd7.pdf
- https://static.usrfiles.com/ugd/b8c837_d2bfe7550c034fc0a0d9026a4d0f3553.pdf
- https://cdn.shopify.com/s/files/1/0437/3001/0273/files/apostrophes_for_possession_worksheet.pdf
- https://cdn.shopify.com/s/files/1/0439/4627/9080/files/81576812042.pdf
- https://cdn.shopify.com/s/files/1/0432/4396/2532/files/formato_riesgo_de_trabajo.pdf
- https://cdn.shopify.com/s/files/1/0436/0863/7602/files/payroll_check_template.pdf
- https://static.usrfiles.com/ugd/b8c837_a0c9fc0cac2149649eced41ed819b38c.pdf
- https://static.usrfiles.com/ugd/b8c837_98e690e6f0534ebfbdd6ce7f5ef469b0.pdf
- https://static.usrfiles.com/ugd/b8c837_bbc5d4d42aef426d9b0325a200230972.pdf
- https://static.usrfiles.com/ugd/b8c837_730f6af2580a4863a0cbe49c81939df6.pdf
- https://static.usrfiles.com/ugd/b8c837_29e5d4c05720453e9c6e518904891e01.pdf
- https://static.usrfiles.com/ugd/b8c837_642773ac15ce4b6585d5d3bfa5f34a20.pdf
- https://static.usrfiles.com/ugd/b8c837_fceb8642e2314bf49b72c69d942b1f56.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00005b04.bin` `73e0d2efbab89d5b1f312216825c889517f7dab0ef238e159865bd8c71e69615`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5B04	5508 bytes
`font_01_sfnt_off00006d9c.bin` `9594e1c75f60098f04f4b058a66119fd2fcd855c751107629cbf7a0b0966420e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D9C	10088 bytes

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