PDF malware analysis — malicious · 9752e70c0af2448e

MALICIOUS

PDF

39.8 KB Created: 2020-07-30 09:35:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4758fea3beb4983f6c813d7391d9c849 SHA-1: 0770be420aa4ce3d02238b3c2741a4a951dfa67e SHA-256: 9752e70c0af2448e054d0993225cfd05a974c445747f8c53020f6a397e1c63ff

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external websites, including a known malicious redirector. The document body, though heavily obfuscated, appears to be related to academic papers, suggesting a lure to disguise the malicious intent. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

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.ru/pify?keyword=igcse+additional+mathematics+topical+past+papers+pdf
- http://files.businessbcs.com/uploads/1/3/2/7/132740343/e9c81eaa854.pdf
- http://files.eveningwiththeauthors.com/uploads/1/3/0/7/130738739/tumibu.pdf
- http://files.thecountryboutiquefl.com/uploads/1/3/0/8/130874588/zenonupa.pdf
- http://files.eatthaicafe.com/uploads/1/3/1/3/131383760/kewidejifi.pdf
- http://files.nicoledrakewright.ca/uploads/1/3/1/4/131454052/murikoseru.pdf
- http://files.nicoledrakewright.ca/uploads/
- https://cdn.shopify.com/s/files/1/0432/4684/6107/files/11758517286.pdf
- https://cdn.shopify.com/s/files/1/0436/0008/5149/files/kafunak.pdf
- https://cdn.shopify.com/s/files/1/0429/4252/9695/files/vavelulusowigavor.pdf
- https://cdn.shopify.com/s/files/1/0431/5096/6950/files/31556191529.pdf
- https://cdn.shopify.com/s/files/1/0433/0966/2366/files/fojiduvujikeg.pdf
- https://cdn.shopify.com/s/files/1/0431/5892/9570/files/fixanitanekudexabe.pdf
- https://cdn.shopify.com/s/files/1/0437/2103/1832/files/zafarekazanokewexivutaze.pdf
- https://cdn.shopify.com/s/files/1/0432/5310/4790/files/23635050122.pdf
- https://cdn.shopify.com/s/files/1/0433/2371/9845/files/kuzitup.pdf
- https://cdn.shopify.com/s/files/1/0434/9581/7382/files/64698311743.pdf
- https://cdn.shopify.com/s/files/1/0430/8946/1410/files/29269588116.pdf
- https://cdn.shopify.com/s/files/1/0435/5129/3599/files/kirowokikomawales.pdf
- https://cdn.shopify.com/s/files/1/0428/6251/0236/files/vadisamok.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00005e2e.bin` `52340a4a79a6bf13c3424dc623cbd2f75647be028a65fa70b50324c5be912873`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E2E	5292 bytes
`font_01_sfnt_off00006ff0.bin` `46a71c5397906d18de14daa4dbd31f6a1d58138abbe3485364e467d040edfee6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FF0	9724 bytes

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