Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5610b74ff3722a6…

MALICIOUS

PDF

39.3 KB Created: 2020-08-30 07:22:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4293899120004efb7e1cc032b4e60cdd SHA-1: 53984bc3db787ab3c88b1d9f4cdf66bf205eb27d SHA-256: a5610b74ff3722a6c70ffabb61b30baf5078e99013816087db27a0e47a571335
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that triggered this heuristic. The presence of a link farm suggests an attempt to obscure the final malicious destination, likely for phishing or malware delivery.

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.ru/wix?keyword=mario+benedetti+quien+de+nosotros+pd
    • https://static.usrfiles.com/ugd/b8c837_51f92751315040d09b44929b0ef56d63.pdf
    • https://static.usrfiles.com/ugd/87a178_853d5d7149fb4f75add386af9b2632e7.pdf
    • https://static.usrfiles.com/ugd/9e41f0_63e75ec9c34a4feba4f0c5c06165d8ca.pdf
    • https://static.usrfiles.com/ugd/b8c837_312504d1cf2d44fcb4f3b3d8e2ce6d74.pdf
    • https://static.usrfiles.com/ugd/69b86f_47e3971ca7b7406bb832794d58cb47a1.pdf
    • https://cdn.shopify.com/s/files/1/0430/0324/8803/files/ielts_recent_actual_test.pdf
    • https://cdn.shopify.com/s/files/1/0428/2905/4118/files/jesoxuve.pdf
    • https://cdn.shopify.com/s/files/1/0437/2430/8630/files/91137497882.pdf
    • https://cdn.shopify.com/s/files/1/0435/3461/4688/files/kamemi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6382/6840/files/wokazin.pdf
    • https://cdn.shopify.com/s/files/1/0440/8557/5845/files/c_export_to_csv.pdf
    • https://cdn.shopify.com/s/files/1/0428/5313/8588/files/fupewixugus.pdf
    • https://static.usrfiles.com/ugd/b3bc21_e0d6494b55ea4ddc9dd87fa557eb9851.pdf
    • https://static.usrfiles.com/ugd/b8c837_9cd1557c1c2947198157ca595f286777.pdf
    • https://static.usrfiles.com/ugd/b8c837_7e02755ea7f64cb2ba3cd4a7f15fa134.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_off000057b7.bin
f241bdc044b9f35df00f37c4b31d68d7676387e82499350b421a483b51bc658c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57B7 5192 bytes
font_01_sfnt_off00006961.bin
7ca6c0e276541c64c16dc24e42550d0d133a61a933cb6951ae60dcc8edf5a9db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6961 11508 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.