PDF malware analysis — malicious · 7ff45108ebf5c637

MALICIOUS

PDF

50.7 KB Created: 2020-08-18 17:25:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 991fb7159e2ee63bd0a9a63904ba929e SHA-1: edd1e34129dc0cdcf81d3471b30a4430211feebf SHA-256: 7ff45108ebf5c637fe90a7622062d449ed18bcda8cef584ce2349b5f5515f086

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting a link farm. The primary malicious URL identified is ttraff.ru, which is known to host redirectors. The document body contains this URL and numerous other Shopify-hosted PDF links, indicating a likely attempt to drive traffic to malicious sites.

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.ru/pify?keyword=joker+meme+template+stairs
- http://files.pro-activemuscletherapy.com/uploads/1/3/0/7/130775462/firevapo.pdf
- http://files.keriakvirginhair.com/uploads/1/3/2/6/132681757/vepemoju.pdf
- https://cdn.shopify.com/s/files/1/0431/8085/1364/files/11124893708.pdf
- https://cdn.shopify.com/s/files/1/0431/7554/2950/files/employee_self_appraisal_form.pdf
- https://cdn.shopify.com/s/files/1/0434/4204/5089/files/79564127013.pdf
- https://cdn.shopify.com/s/files/1/0438/1681/2706/files/fulefuwigik.pdf
- https://cdn.shopify.com/s/files/1/0434/7723/7917/files/86126780693.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74832969368.pdf
- https://cdn.shopify.com/s/files/1/0428/9236/1887/files/bomanegaxosuzo.pdf
- https://cdn.shopify.com/s/files/1/0437/0500/8293/files/advanced_excel_shortcuts_keys.pdf
- https://cdn.shopify.com/s/files/1/0433/6805/4949/files/how_to_override_bootstrap_css.pdf
- https://cdn.shopify.com/s/files/1/0430/6518/0314/files/chemistry_lab_equipment_and_uses.pdf
- https://cdn.shopify.com/s/files/1/0440/2040/0286/files/business_card_template_free_photoshop.pdf
- https://cdn.shopify.com/s/files/1/0433/4845/9673/files/jowugibulugileguri.pdf
- https://cdn.shopify.com/s/files/1/0432/4111/1712/files/kovebosoj.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006551.bin` `e93f34b63d925feb560c52e131805f1cec62d2b5466361aadb252c47c112791c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6551	5016 bytes
`font_01_sfnt_off00007649.bin` `6abb21907a41a280e8c10a958bc9427c3d733d4b98d44f562b27367fe00a534e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7649	13992 bytes
`font_02_sfnt_off0000a33e.bin` `3a4638eecdb49a75d59dd3a6d9342f5cf136124eef043efc901be77837571066`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA33E	17672 bytes

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