Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4298bc08eacb8ad…

MALICIOUS

PDF

41.1 KB Created: 2020-09-01 03:39:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72894c0d48ea4e3af030162db521404e SHA-1: 81c3a503ce383b2b44fa781dfdb4abb4f5899112 SHA-256: d4298bc08eacb8ad352a00166666ad9b660efe78a7be6f3d315bf962152aa03b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains heuristics indicating it is a malicious redirector and part of a link farm. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=instagram++ios+6', which is flagged as a malicious redirector. This suggests the document's primary purpose is to redirect the user to malicious infrastructure, likely for phishing or malware distribution.

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=instagram++ios+6
    • https://static.usrfiles.com/ugd/b916f4_5e92c9d0810b4ce6a6197603a74eec34.pdf
    • https://static.usrfiles.com/ugd/b8c837_53b723ca448249d7b193bc810be51e90.pdf
    • https://static.usrfiles.com/ugd/dc98cc_08d85b8c5c8a4ab28a152e751f93c8b9.pdf
    • https://static.usrfiles.com/ugd/6da380_0d5a67b62b474b75bc24cd7891f5e122.pdf
    • https://static.usrfiles.com/ugd/e5cbe5_29562606eda1433a9f4ac5967dfdfab7.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/webasevoninidim.pdf
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/16869460312.pdf
    • https://cdn.shopify.com/s/files/1/0431/0266/6914/files/samovanisevezu.pdf
    • https://cdn.shopify.com/s/files/1/0440/6122/9208/files/pagpili_ng_batis_ng_impormasyon.pdf
    • https://cdn.shopify.com/s/files/1/0427/4189/1238/files/rubemaxeko.pdf
    • https://cdn.shopify.com/s/files/1/0430/0577/1929/files/93476511589.pdf
    • https://static.usrfiles.com/ugd/2ac701_89dd90873d43461bb2132c7b17a509de.pdf
    • https://static.usrfiles.com/ugd/136d07_2725e889cc3b4c258b86c5ab3206fc95.pdf
    • https://static.usrfiles.com/ugd/5b604d_cd8101e1c2834ee5b6f34c500b0f53d3.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/
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/webasevonini

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000637f.bin
f2834d3f40c66299bdd6bfbe069164f99ccb3996c232d7db216259aa1eb7bfcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x637F 5064 bytes
font_01_sfnt_off000074a7.bin
c19bbef18e80af214bc1b43fd3716b4da42901c2294daefe899f66bb4fec06ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74A7 10156 bytes

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