PDF malware analysis — malicious · 466a884f8b079c20

MALICIOUS

PDF

41.9 KB Created: 2020-08-29 02:52:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8013e9607093a9f625e560d451407ce1 SHA-1: 80984a53b4d2db21928e18cce0576bc0ac0684b7 SHA-256: 466a884f8b079c205776f4c0e723092288e58cc8f13914d2e618e6f6fde653e7

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a PDF link farm. One of the primary links points to a known malicious redirector infrastructure at 'ttraff.ru'. While many other links point to benign Shopify domains hosting PDFs, the presence of the malicious redirector and the sheer volume of links suggest an attempt to manipulate search engine results or distribute malicious content through a link farm. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

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/wix?keyword=number+line+template+0-20
- https://cdn.shopify.com/s/files/1/0433/9888/9635/files/cancer_pulmonar_articulo_de_revision.pdf
- https://cdn.shopify.com/s/files/1/0432/6014/9910/files/39844712638.pdf
- https://cdn.shopify.com/s/files/1/0437/5894/4405/files/cloudformation_build_spec.pdf
- https://static.usrfiles.com/ugd/b8c837_7d8fc4fd0ad94a6da987e6ac189295b7.pdf
- https://static.usrfiles.com/ugd/b8c837_a2eb49c687ef45a28f29cbe42912ab83.pdf
- https://static.usrfiles.com/ugd/b8c837_04244193227144738393786ac1a82aa0.pdf
- https://static.usrfiles.com/ugd/b8c837_5b35804b4e1b42b0b027bcbe58865553.pdf
- https://static.usrfiles.com/ugd/b8c837_46c3feeb149940869aea17a1290c2170.pdf
- https://static.usrfiles.com/ugd/b8c837_942f0c572a584e59a5cc141a15430da4.pdf
- https://static.usrfiles.com/ugd/b8c837_0d3a9aaa7b394840a10067bfcc32ede7.pdf
- https://static.usrfiles.com/ugd/b8c837_6b386d4fea1f4f8880ee482204dfd440.pdf
- https://static.usrfiles.com/ugd/b8c837_ff402b1537dc4491aaa535dbdb94edd5.pdf
- https://static.usrfiles.com/ugd/b8c837_53ed3c5fc2ae476893ca132eca976b80.pdf
- https://static.usrfiles.com/ugd/b8c837_6ecce2c2441a42d0b8ca3ab46d43b0e0.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_off00005a1d.bin` `d68d1bfc2246ad73fd3a7d33d5e2dfe8acc3e7eb02125e5c44826b77a6cdc92e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5A1D	4972 bytes
`font_01_sfnt_off00006add.bin` `a45a17e4cae49b1de7da6ecbe71d58daf95464832bdf566c4a7744b2a53d221a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6ADD	9956 bytes
`font_02_sfnt_off00008cd5.bin` `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8CD5	4324 bytes

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