Malicious PDF — malware analysis report

Static analysis result for SHA-256 d479953d50e23c88…

MALICIOUS

PDF

41.6 KB Created: 2020-08-11 07:10:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b33a34dcd98f6ef795cf92bb9c15ed6a SHA-1: d4db048a3849d00152c09576a3d0e30ba801b10f SHA-256: d479953d50e23c88e444bd0b140a8e78dd3b98e39a6e7602ff9cb5501ce48052
150 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains, but one critical link redirects through ttraff.com. This indicates a link farm or redirection strategy designed to obscure the final malicious destination. The document body, though heavily obfuscated, contains the same URL found in the critical heuristic, suggesting the document's primary purpose is to trick users into visiting this malicious redirector. The ML classifier also strongly flagged this PDF as malicious.

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=agile+transformation+strategy+pdf
    • http://files.anthonysbeehive.shop/uploads/1/3/0/9/130969428/jesemeponatu_duzude_favavixazatig_nevulalutedilu.pdf
    • http://files.lowenglish.com/uploads/1/3/1/3/131398184/6923884.pdf
    • http://gozavon.tyler-esque.com/uploads/1/3/1/3/131379578/1355033.pdf
    • http://files.roofingartisans.com/uploads/1/3/1/3/131383444/zaredumerage-fobokitadujujit.pdf
    • http://files.edysong.com/uploads/1/3/1/0/131070207/gatukemipok-xekukuvelir.pdf
    • https://cdn.shopify.com/s/files/1/0438/5121/9104/files/susujobibifezebaz.pdf
    • https://cdn.shopify.com/s/files/1/0432/4986/0765/files/vepafamadumuteren.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/munerofuxejid.pdf
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/93003965477.pdf
    • https://cdn.shopify.com/s/files/1/0431/5929/0022/files/71100171613.pdf
    • https://cdn.shopify.com/s/files/1/0434/1324/2014/files/abel_albonetti_30_day_arms.pdf
    • https://cdn.shopify.com/s/files/1/0437/7939/1646/files/76884603002.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xixuvedivikeror.pdf
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/77462578209.pdf
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/39472875566.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8102/files/gimazuxo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6844/9180/files/askep_bendungan_asi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4432/files/87867666315.pdf
    • https://cdn.shopify.com/s/files/1/0431/7613/2774/files/93273592264.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_off000065de.bin
408c595e61df5b23849ff9d24a97a190991d612762f4dfd51669b99d4b4e3c80
pdf-font-stream PDF embedded font (sfnt) at offset 0x65DE 5452 bytes
font_01_sfnt_off00007855.bin
103428a24985858acb12df9344667be730947374083513d41135f332791bd3f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7855 9712 bytes