PDF malware analysis — malicious · f24cfe145086c805

MALICIOUS

PDF

42.6 KB Created: 2020-09-09 06:26:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 000c20f441364c78ad013e406fe112cd SHA-1: ced8acf71f8aa242a9d63e05599b947fcb7cbe5c SHA-256: f24cfe145086c805a4559951e8c2cf30a81d2ede3eb9e2c513af0c9c2052c1ae

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.ru. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many of which are benign but one redirects to malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'breast cancer literature review pdf' and the malicious URL, suggesting a lure to disguise malicious redirection.

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=breast+cancer+literature+review+pdf
- https://static.usrfiles.com/ugd/ed64d2_7fe33fc821064452ae170a19f6a75d36.pdf
- https://static.usrfiles.com/ugd/4b7290_3788fca33859429c8a4ef1d7300b35ed.pdf
- https://static.usrfiles.com/ugd/6c98bc_31233d7e16884c688d142561333e7c94.pdf
- https://static.usrfiles.com/ugd/f3ecbe_b74efd454eee4169a852d2f6bbf78a0f.pdf
- https://static.usrfiles.com/ugd/3f4b99_38bf3eb77a8846da8ec99c21096b9555.pdf
- https://static.usrfiles.com/ugd/01bc73_987c0f72e5db4fd2a7f8d78fc0e69c6b.pdf
- https://static.usrfiles.com/ugd/16879a_99768b85499d4d1cafa6dcf287e26b69.pdf
- https://static.usrfiles.com/ugd/95bb70_9004ab7d13714bd7a7dde3deb751f458.pdf
- https://cdn.shopify.com/s/files/1/0439/6836/4702/files/revole.pdf
- https://cdn.shopify.com/s/files/1/0439/3703/8494/files/99857508290.pdf
- https://cdn.shopify.com/s/files/1/0428/0634/5895/files/clinkz_dota_2_guide.pdf
- https://cdn.shopify.com/s/files/1/0428/5651/3692/files/haves_and_have_nots_episode_guide.pdf
- https://cdn.shopify.com/s/files/1/0431/5417/8216/files/52944282933.pdf
- https://cdn.shopify.com/s/files/1/0434/0567/2597/files/66308152881.pdf
- https://cdn.shopify.com/s/files/1/0438/4299/4336/files/wanagekizes.pdf
- https://cdn.shopify.com/s/files/1/0453/4665/2315/files/amyotrophic_lateral_sclerosis_adalah.pdf
- https://cdn.shopify.com/s/files/1/0463/3339/5099/files/xixawekadomatewi.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_off00006939.bin` `e4dd8a8e4a1a3a9dfb2a0cbcaec30b3e5f4b49b505b7071f6561179ff0f37f14`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6939	5352 bytes
`font_01_sfnt_off00007b95.bin` `862558e56ffb5189cbe2462b1f011a1f7d1d9566829680cbd5040be382f5259d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7B95	9904 bytes

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