Malicious PDF — malware analysis report

Static analysis result for SHA-256 2688e21d95db1c34…

MALICIOUS

PDF

37.0 KB Created: 2020-06-02 00:49:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46d79a03913906e5e53ff0d93712b61e SHA-1: aec65a509a4af39b8311427cbb9ac8d0f206a02f SHA-256: 2688e21d95db1c341d1f1e8f77c77a79f2960d108026061439ece891537ccbc6
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of external links to various domains, many of which appear to be part of a link farm. The heuristic 'PDF_SEO_LINK_FARM' indicates a high density of such links, suggesting a malicious intent to redirect users. The document body itself is largely unreadable, but the presence of URLs and the heuristic firings strongly suggest a malicious redirection scheme rather than legitimate content. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://hkcfoundationforparkinsons.org/uploads/1/3/0/6/130621238/130621238.html#percy+jackson+the+lightning+thief+chapter+7
    • http://dartistessalon.com/uploads/1/3/0/4/130490786/mifenasisipu-medudufop-vulik-pazutogi.pdf
    • http://testingoutasitebuilder.net/uploads/1/3/0/8/130813466/405953.pdf
    • http://nlcstrustedadvisor.com/uploads/1/3/1/3/131382257/jigux.pdf
    • http://cellupica.ca/uploads/1/3/1/6/131636792/8693814.pdf
    • http://nashvillenomad.com/uploads/1/3/1/3/131381519/9943453.pdf
    • http://topguntowers.com/uploads/1/3/0/6/130620618/vuziku-xeporurukewi.pdf
    • http://hkcfoundationforparkinsons.org/uploads/1/3/0/6/130621238/terms.html
    • http://hkcfoundationforparkinsons.org/uploads/1/3/0/6/130621238/dmca.html
    • http://hkcfoundationforparkinsons.org/uploads/1/3/0/6/130621238/policy.html
    • https://rezitofu.files.wordpress.com/2020/05/44242558688.pdf
    • https://fulazetula.files.wordpress.com/2020/05/2700480240.pdf
    • https://ronezas.files.wordpress.com/2020/05/fikilipexujodadubewipejip.pdf
    • https://redimodosiru.files.wordpress.com/2020/06/molugudajigazoxesedejef.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006639.bin
4aaa7ae7e14fab4354c8c08ffc99f0afe2eb77b52ba48fa108e390f740eca1be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6639 10096 bytes

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