Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bc26ddd05b47284…

MALICIOUS

PDF

47.5 KB Created: 2020-07-20 21:20:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e80f836583040ad08e6a6d81b37ee34 SHA-1: 80efa3d570c9659bd4ee66329177d26562b25a06 SHA-256: 4bc26ddd05b47284db1b69fda29b956cbb793f95d3b0752261501b693e00e25f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm designed for SEO manipulation or to obscure malicious redirects. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains keywords related to document conversion, suggesting a lure to trick users into clicking the malicious links.

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.cc/wb?keyword=convert%20docx%20to%20pdf%20libreoffice%20php
    • http://files.supernaturaltraveler.com/uploads/1/3/0/7/130740213/f66b3e7f23d50.pdf
    • http://files.guinodesign.com/uploads/1/3/2/6/132681826/5771821.pdf
    • http://files.photoartnm.com/uploads/1/3/0/9/130968994/9521077.pdf
    • http://files.murchiebhs.com/uploads/1/3/1/4/131453539/dugok.pdf
    • http://files.rapdp.com/uploads/1/3/0/8/130873810/b628f40a.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gimuwuwizarisatin.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bijalikupuxamimidesedol.pdf
    • https://cdn.shopify.com/s/files/1/0429/0940/1251/files/91348980841.pdf
    • https://sopekasisesa.files.wordpress.com/2020/07/jisexupanitesakexafepenug.pdf
    • https://nubunof.files.wordpress.com/2020/06/52592180586.pdf
    • https://funererole.files.wordpress.com/2020/07/sipumot.pdf
    • https://guvemajik.files.wordpress.com/2020/07/kovemokufatib.pdf
    • https://nobijip.files.wordpress.com/2020/07/40839438336.pdf
    • https://cdn.shopify.com/s/files/1/0439/1682/0635/files/simipipefewudezifidi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8560/2721/files/77120699378.pdf
    • https://cdn.shopify.com/s/files/1/0428/4196/4710/files/niwusojiguridabokoga.pdf
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/70716110765.pdf
    • https://cdn.shopify.com/s/files/1/0429/6520/5141/files/nisaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9606/4671/files/9266871514.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7086/files/49166609836.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007262.bin
23d3034f5bc233ab7a8e9baf31a559c07bb8cbfdd586a85f25f47597f9fba48d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7262 4936 bytes
font_01_sfnt_off00008321.bin
cf50d13c5c21d2e34fba0d9dd21119d4839fc35fdaebfe62cbacf51850cc328d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8321 1936 bytes
font_02_sfnt_off00008c60.bin
8e259f580bc800cd7012e7cd69deff199df0464ceb0516b5a088ad86c75bc683
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C60 10568 bytes