Malicious PDF — malware analysis report

Static analysis result for SHA-256 eea3260a145673dc…

MALICIOUS

PDF

34.4 KB Created: 2020-08-31 15:03:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 680ac4b44a84f496f0f95545ec28ae95 SHA-1: 085cda20574721432c5cc3c09d59f63760f68166 SHA-256: eea3260a145673dceee7986eb985f3ed8e96b4cb1b11a835c119cbfc8b4a8790
120 Risk Score

Malware Insights

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

The PDF document contains a lure related to a 'Discord ing update loop' and embeds numerous links. One of these links, 'https://ttraff.ru/wix?keyword=discord+ing+update+loop', is identified as a malicious redirector. The PDF also contains a large number of links to Shopify domains, suggesting a link farm or distribution mechanism. The presence of a malicious redirector indicates an attempt to lead 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.ru/wix?keyword=discord+ing+update+loop
    • https://cdn.shopify.com/s/files/1/0430/1701/1353/files/tififunitedomor.pdf
    • https://cdn.shopify.com/s/files/1/0464/5152/3752/files/12762147921.pdf
    • https://cdn.shopify.com/s/files/1/0432/8990/3259/files/king_bed_sheets_on_sale.pdf
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/3856796170.pdf
    • https://cdn.shopify.com/s/files/1/0429/5521/0905/files/fexab.pdf
    • https://cdn.shopify.com/s/files/1/0460/0620/6631/files/mowejorukesag.pdf
    • https://static.usrfiles.com/ugd/726ec9_d5f9eb6e6d3d48c4a48966dd0bab3ec4.pdf
    • https://static.usrfiles.com/ugd/65b209_336d98e4ffa947969f7467d09c28c110.pdf
    • https://static.usrfiles.com/ugd/b8c837_823f16bd4e6a43ed96410974cb865342.pdf
    • https://static.usrfiles.com/ugd/1c8c6c_6fdebced452f4f9fb0b7a3f3347ef651.pdf
    • https://static.usrfiles.com/ugd/b8c837_406e5f5349dd4ea8af05a25f436413b7.pdf
    • https://cdn.shopify.com/s/files/1/0435/6676/0095/files/gezedabadebutijisot.pdf
    • https://cdn.shopify.com/s/files/1/0448/4333/5837/files/kalender_2020_hessen.pdf
    • https://cdn.shopify.com/s/files/1/0433/9236/8796/files/antecedentes_judiciales_certificado.pdf
    • https://cdn.shopify.com/s/files/1/0431/4333/2000/files/tufoli.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_off00004812.bin
5e6521a65291773c2176e366797c252d870c1be0b228596483974581082dc502		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4812 5240 bytes
font_01_sfnt_off000059f4.bin
327bd8484eab296d2c80ad6eeab0fe8c1f821cbad9a5c892ca678d87c0c7c947		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59F4 10292 bytes

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