Malicious PDF — malware analysis report

Static analysis result for SHA-256 38e0595db8fed813…

MALICIOUS

PDF

41.3 KB Created: 2020-08-11 20:38:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 26b75c357875a7b186ff9bd546a557df SHA-1: 05247b0993821e180c36d5cda38ae3cc12276d54 SHA-256: 38e0595db8fed813f92b93859ac3cb94f7c2e67cbc95cc23b5ad12b680bb6ad6
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, https://ttraff.cc/wb?keyword=siemens%20induction%20motor%20catalogue%20pdf, is designed to lure users into clicking it under the guise of a product catalogue. The PDF also hosts a large number of external links, many pointing to Shopify, suggesting a link farm for SEO manipulation or to obscure the malicious redirector. No scripts were extracted, but the presence of the malicious redirector and the link farm strongly indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=siemens%20induction%20motor%20catalogue%20pdf
    • http://files.devoted-disciple.com/uploads/1/3/0/7/130775980/6b80b4fadf.pdf
    • http://files.pleasantbud.com/uploads/1/3/1/6/131607237/08d8e2.pdf
    • http://files.batigettes.com/uploads/1/3/2/6/132681672/2928919.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1799/files/36964850576.pdf
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/83553639214.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/11930568780.pdf
    • https://cdn.shopify.com/s/files/1/0433/7215/0947/files/75878836206.pdf
    • https://cdn.shopify.com/s/files/1/0429/6127/2995/files/ayatul_kursi_in_bangla_pronunciation.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/lowes_lufkin_tx.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8032/files/7071661886.pdf
    • https://cdn.shopify.com/s/files/1/0428/6090/4604/files/90428427411.pdf
    • https://cdn.shopify.com/s/files/1/0439/4529/6027/files/96851205649.pdf
    • https://cdn.shopify.com/s/files/1/0430/7802/5377/files/12732384590.pdf
    • https://cdn.shopify.com/s/files/1/0432/8269/4312/files/bayesian_network_in_artificial_intelligence.pdf
    • https://cdn.shopify.com/s/files/1/0433/8660/1635/files/32533433677.pdf
    • https://cdn.shopify.com/s/files/1/0434/6111/6064/files/wubevejimasotojemusanojat.pdf
    • https://cdn.shopify.com/s/files/1/0429/8519/3621/files/excalibur_remote_start_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/0758/9027/files/rogawugexelikidusuz.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_off00006301.bin
2e2da2bfc4ef2a30045a2cea4e9b15c744e2ffe91509ecd3fd31e4f06ad247b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6301 5580 bytes
font_01_sfnt_off000075d3.bin
25427232aa40a20af47a7f88bfe195779ae606b077f28e146d3314979beccbbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75D3 10032 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.