Malicious PDF — malware analysis report

Static analysis result for SHA-256 3483ace494c55b55…

MALICIOUS

PDF

44.6 KB Created: 2020-08-06 14:31:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d7e43fe01e98c9a6574943d0e9b1106 SHA-1: fcc05af91e858c28e252a131821df08d0d2bffdd SHA-256: 3483ace494c55b552a11807b4370687c980a75f0f3345fa3e931b801d4b2ecdb
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded URL points to a known malicious redirector, and the document body contains a large number of links, many of which are to benign Shopify domains but are likely part of a larger SEO poisoning or link farm strategy to obscure the malicious destination. The primary malicious URL is https://ttraff.com/pify?keyword=south+of+the+border+west+of+the+sun+pdf.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=south+of+the+border+west+of+the+sun+pdf
    • http://files.rkrally.com/uploads/1/3/1/8/131857445/7107707.pdf
    • http://files.ckcondos.com/uploads/1/3/1/3/131383825/lopuvo-fijofuxaruko-nuburejudo-xifuwapojega.pdf
    • http://files.lastfrontiermusic.com/uploads/1/3/1/4/131453031/xezikip-kijep.pdf
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/google_sheets_date_format.pdf
    • https://cdn.shopify.com/s/files/1/0436/1699/3440/files/46844066129.pdf
    • https://cdn.shopify.com/s/files/1/0431/4116/9303/files/59280712581.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/burnt_offerings_robert_marasco.pdf
    • https://cdn.shopify.com/s/files/1/0429/4819/8556/files/pelowi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3672/8735/files/60045232738.pdf
    • https://cdn.shopify.com/s/files/1/0448/2547/7277/files/guia_ceneval_exani_ii.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5093/files/34482430581.pdf
    • https://cdn.shopify.com/s/files/1/0429/7742/7609/files/99522960052.pdf
    • https://cdn.shopify.com/s/files/1/0433/7490/3452/files/putifeloxadubapaxev.pdf
    • https://cdn.shopify.com/s/files/1/0430/7386/3842/files/xofomovejofuxigenuririxor.pdf
    • https://cdn.shopify.com/s/files/1/0428/2925/0719/files/94984001394.pdf
    • https://cdn.shopify.com/s/files/1/0432/0670/5311/files/basic_programming_language_for_beginners.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_off0000717d.bin
0a6724ded0a8e7d3996aba8948556e9a1e96533f41944a4903a629991f42690d
pdf-font-stream PDF embedded font (sfnt) at offset 0x717D 5224 bytes
font_01_sfnt_off0000834a.bin
738799fe36e407f27e4b00d7a5bee347a32a1d165459ab67bbba9b6281e30255
pdf-font-stream PDF embedded font (sfnt) at offset 0x834A 9976 bytes