Malicious PDF — malware analysis report

Static analysis result for SHA-256 581f77fdefb669ff…

MALICIOUS

PDF

46.4 KB Created: 2020-07-30 21:49:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a04e7b444128962619b0a5bac044468 SHA-1: 41b6bdbe152e3fb937ac155f1f2eebe308d431f0 SHA-256: 581f77fdefb669ffcd3e34ea2ba8a1d1e42e3cda912723956e7034386ca3b719
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is part of a link farm designed to redirect users to a large number of other PDF files, likely for SEO manipulation or to host further malicious content. The document body is heavily obfuscated, preventing a clear understanding of its direct intent beyond the malicious link.

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=brand+identity+pdf+2020
    • http://files.theclaytonconnection.com/uploads/1/3/2/6/132682897/wilidajo.pdf
    • http://files.caringservices.org/uploads/1/3/1/4/131454771/83d3a.pdf
    • http://files.kratomvendorgrade.com/uploads/1/3/0/7/130738568/gefiwox.pdf
    • https://cdn.shopify.com/s/files/1/0429/0795/9452/files/wenupotesefapirem.pdf
    • https://cdn.shopify.com/s/files/1/0439/1020/1499/files/97995500560.pdf
    • https://cdn.shopify.com/s/files/1/0439/2599/5688/files/tukaguvibotaxi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nagexonulelaxefirulilona.pdf
    • https://cdn.shopify.com/s/files/1/0434/5475/9065/files/bewirebikoxup.pdf
    • https://cdn.shopify.com/s/files/1/0434/4286/4289/files/31161993572.pdf
    • https://cdn.shopify.com/s/files/1/0438/4561/5766/files/8264183826.pdf
    • https://cdn.shopify.com/s/files/1/0436/9501/4042/files/futilobodilewojowivu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5490/8071/files/febobunekolixalesokifenus.pdf
    • https://cdn.shopify.com/s/files/1/0429/6900/6236/files/sadajasax.pdf
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/46842331571.pdf
    • https://cdn.shopify.com/s/files/1/0432/9055/8620/files/gaxijekepovivakuri.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_off00007867.bin
6d247ccb74086f9d806aa264d9b496e341c5ccc18206d8fe9dc8903a13b1a366		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7867 4928 bytes
font_01_sfnt_off00008935.bin
db7926ce1965a1672daf5684109ffb3b03acbb0a254d466ffe017af54429d7e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8935 10352 bytes

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