PDF malware analysis — malicious · 4fbe90456b56d9f3

MALICIOUS

PDF

52.2 KB Created: 2020-08-09 06:05:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 91ac93a04b519572d864ebc1319f05aa SHA-1: d43f3fea3bb83d460c2d1edc1446b7e763a9f4e7 SHA-256: 4fbe90456b56d9f36eff7fa1c4e69abba452a3062cc26b9a2b566af258f533ad

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, a technique often used for SEO spam or to redirect users to malicious sites. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=ciencia+ficcion+libros+pdf+gratis'. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a lure for free book downloads that ultimately leads to 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.com/pify?keyword=ciencia+ficcion+libros+pdf+gratis
- http://files.iepconsultingwithcatherineevans.com/uploads/1/3/1/4/131483361/b25e389e4251.pdf
- http://files.lovelylemonco.com/uploads/1/3/1/1/131164075/7569283.pdf
- http://files.fatbellybassmasters.com/uploads/1/3/1/4/131406372/tuxilebobugeme_badav.pdf
- http://files.sirpapaivinen.com/uploads/1/3/0/9/130968984/aabb96.pdf
- https://cdn.shopify.com/s/files/1/0433/5009/8085/files/28249130037.pdf
- https://cdn.shopify.com/s/files/1/0435/5050/7167/files/o_que__materialismo_histrico_dialtico.pdf
- https://cdn.shopify.com/s/files/1/0434/5544/7201/files/organic_chemistry_2nd_edition_david_klein.pdf
- https://cdn.shopify.com/s/files/1/0431/3127/3365/files/48132039648.pdf
- https://cdn.shopify.com/s/files/1/0429/2853/7753/files/69886050956.pdf
- https://cdn.shopify.com/s/files/1/0434/5823/2473/files/zetidorogubifomabibenuri.pdf
- https://cdn.shopify.com/s/files/1/0429/1297/2963/files/56861446930.pdf
- https://cdn.shopify.com/s/files/1/0428/4914/0902/files/fepopugigeperop.pdf
- https://cdn.shopify.com/s/files/1/0436/0588/5090/files/19692877123.pdf
- https://cdn.shopify.com/s/files/1/0431/3510/7233/files/guzadusimolexex.pdf
- https://cdn.shopify.com/s/files/1/0440/6067/2165/files/jowag.pdf
- https://cdn.shopify.com/s/files/1/0431/4100/5480/files/10229721515.pdf
- https://cdn.shopify.com/s/files/1/0434/3287/0037/files/nozatenag.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_off00008b33.bin` `a80953ee64fc8f41f249067bd0d7b81b67bc7ebf84f742fdba1979154db7d3e7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B33	5368 bytes
`font_01_sfnt_off00009d7c.bin` `e0bfeb71836c737225c896722e5107e6bf214b48e96c9f4321e4b62986fa8c64`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9D7C	11204 bytes

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