PDF malware analysis — malicious · 74842f1a04eb4aca

MALICIOUS

PDF

33.9 KB Created: 2020-08-07 08:51:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3b42b6e75ea1c1d31ccdf8ae1b887ffd SHA-1: 6a4e38594afd0bd7d7c73959962687fb777ad8a8 SHA-256: 74842f1a04eb4acaa2a7dee2a3605bf0b43fb14883378bd130d9f8bc24a00841

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of these links, https://ttraff.ru/pify?keyword=advanced+medical+life+support+pdf+download, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous links suggests a link farm or SEO poisoning tactic to distribute 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=advanced+medical+life+support+pdf+download
- http://files.harrietslaughter.net/uploads/1/3/0/8/130813921/812699.pdf
- http://files.jenkinsreidfamily.com/uploads/1/3/1/4/131437308/2b1d987a1e28a8b.pdf
- http://files.college-boundcoachesnetwork.com/uploads/1/3/1/3/131383837/5314345.pdf
- http://files.lesdamesontario.org/uploads/1/3/1/3/131379343/d82017427a94039.pdf
- http://files.americanmelodrama.com/uploads/1/3/2/6/132696274/xiset-pegixa.pdf
- https://cdn.shopify.com/s/files/1/0431/1816/6167/files/ligeramente_peligroso_mary_balogh_gratis.pdf
- https://cdn.shopify.com/s/files/1/0434/0944/0924/files/gujeb.pdf
- https://cdn.shopify.com/s/files/1/0431/4375/7992/files/gotamexoxupi.pdf
- https://cdn.shopify.com/s/files/1/0434/4204/5090/files/10334474083.pdf
- https://cdn.shopify.com/s/files/1/0431/6371/3695/files/basic_english_tests.pdf
- https://cdn.shopify.com/s/files/1/0433/9279/4774/files/archaeologies_of_the_future.pdf
- https://cdn.shopify.com/s/files/1/0434/5259/6374/files/mizirozobujovojabinada.pdf
- https://cdn.shopify.com/s/files/1/0439/9605/3662/files/kafamozaduxekuke.pdf
- https://cdn.shopify.com/s/files/1/0437/6310/5953/files/turn_off_avast_notifications.pdf
- https://cdn.shopify.com/s/files/1/0433/5622/5686/files/govelovizipagadisob.pdf
- https://cdn.shopify.com/s/files/1/0429/8860/1503/files/clasificacion_de_los_actos_administrativos.pdf
- https://cdn.shopify.com/s/files/1/0427/4218/6150/files/65223477801.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_off00004640.bin` `fd67635626a0fc7dc9c3e82180f1498db6f9d6f9a30a1a9c9fa5362205e4e49d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4640	5440 bytes
`font_01_sfnt_off000058c7.bin` `4ed7508aec0a253e54788a93dcc7ea6e3dd50dd17bd6a5de586748937690f3f8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x58C7	9472 bytes

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