Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d9f833541b6ae15…

MALICIOUS

PDF

41.2 KB Created: 2020-08-06 08:57:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ed6daa8dfc656f6bc1244367c9f93fa SHA-1: ebd6c6842218afb2767b29ac1b40611fd5fd6c6b SHA-256: 7d9f833541b6ae15b07d8a5f37980df42c67e0c86895dd63fa66cb3f08d90c20
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link at https://ttraff.com/pify?keyword=dulce+et+decorum+est+analysis+line+by+line+pdf is part of known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic suggests a large number of external links, likely for SEO manipulation or to obscure malicious destinations. No scripts were extracted, but the presence of malicious redirector links strongly suggests an attempt to lure the user to a harmful site.

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/pify?keyword=dulce+et+decorum+est+analysis+line+by+line+pdf
    • http://files.riveterlaw.com/uploads/1/3/1/4/131438718/xadorifij-numofozefiwe-judure.pdf
    • http://files.silviossauce.com/uploads/1/3/1/4/131438018/gatagupeworekofikife.pdf
    • http://nogali.capabilitygray.com/uploads/1/3/2/7/132741555/patojezirelulalam.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7957/files/97468159445.pdf
    • https://cdn.shopify.com/s/files/1/0431/1498/7682/files/xezalu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2611/0885/files/bogedu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0342/8510/files/98544360087.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/serepibomanufomami.pdf
    • https://cdn.shopify.com/s/files/1/0428/9999/6839/files/3._idiots._2009_subtitle_english.pdf
    • https://cdn.shopify.com/s/files/1/0435/5283/3687/files/68262363620.pdf
    • https://cdn.shopify.com/s/files/1/0429/4252/9695/files/brochure_format.pdf
    • https://cdn.shopify.com/s/files/1/0431/9730/0885/files/grade_12_physical_science_module.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_off000062f1.bin
0ea86984f3e45736aca85cb518ce55c705d65c778cd97a29cbfd261cd9614667		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62F1 5540 bytes
font_01_sfnt_off000075b8.bin
c9f3f117090578376b0976087f0574d898764420e14b02916b16789e17f358d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75B8 9932 bytes

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