Malicious PDF — malware analysis report

Static analysis result for SHA-256 699f7a561ea8f642…

MALICIOUS

PDF

34.8 KB Created: 2020-08-19 13:31:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4081bdbcf6832667706762da4dcb7982 SHA-1: 8a8d8df5d5b7b6f22d14a8990173b362ec9a0a9d SHA-256: 699f7a561ea8f64200adddb54232ab189fadf887c31ec8ff698e83b024c9d286
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to malicious infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, contains text related to 'Bugaboo cameleon 2 instructions manual' and a URL, suggesting a lure to disguise the malicious link. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, likely for SEO manipulation or to host further malicious content.

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.com/pify?keyword=bugaboo+cameleon+2+instructions+manual
    • http://files.accordionapocalypse.com/uploads/1/3/2/6/132681579/4851874.pdf
    • http://files.lisammartino.com/uploads/1/3/0/9/130969434/1575228.pdf
    • http://files.andquirky.co.uk/uploads/1/3/1/8/131872021/3371652.pdf
    • http://lulebeket.ginotorres.com/uploads/1/3/0/9/130969481/9de167456.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/5082/6919/files/64374838887.pdf
    • https://cdn.shopify.com/s/files/1/0431/2373/6725/files/edit_file_ke_excel.pdf
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/34128280629.pdf
    • https://cdn.shopify.com/s/files/1/0429/1543/0559/files/toluvotekedezojelikex.pdf
    • https://cdn.shopify.com/s/files/1/0438/1887/7090/files/71765493466.pdf
    • https://cdn.shopify.com/s/files/1/0434/1019/4582/files/que_es_contexto_escolar.pdf
    • https://cdn.shopify.com/s/files/1/0434/4456/8216/files/aggregate_demand_and_supply_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0431/4349/5841/files/nezumavoro.pdf
    • https://cdn.shopify.com/s/files/1/0431/5349/0074/files/32394313115.pdf
    • https://cdn.shopify.com/s/files/1/0436/3950/5056/files/learn_spanish.pdf
    • https://cdn.shopify.com/s/files/1/0432/2630/0575/files/24726254882.pdf
    • https://cdn.shopify.com/s/files/1/0428/8443/2031/files/boseginoxalu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/88027753126.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a60.bin
0fb2a0f8574131f60d99b9f264738339fb16415de01aed364106f4f22f34c6ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A60 5440 bytes
font_01_sfnt_off00005cc8.bin
cbeae70377f0e084205d9a8680e039653d0ae2035d3fed77630096bfe418e584		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC8 9784 bytes

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