MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a significant number of embedded links, many of which point to external PDF documents hosted on various platforms. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which likely serves as a lure or initial stage for a malicious campaign. The ML classifier strongly indicated maliciousness, supporting the assessment that this PDF is part of a link farm or SEO manipulation scheme, potentially distributing malware or leading to phishing sites.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne 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=14.+2+acceleration+worksheet
- https://static.usrfiles.com/ugd/921909_d4aa3f1057864f73be19bd4470e13d4f.pdf
- https://static.usrfiles.com/ugd/b8c837_aecdab9270964012a74f003896c4ad80.pdf
- https://static.usrfiles.com/ugd/eaf48f_9737830f96ec4819a3b4a33e6222b8e6.pdf
- https://cdn.shopify.com/s/files/1/0430/5915/1009/files/656530067.pdf
- https://cdn.shopify.com/s/files/1/0438/1225/7952/files/rasepevukosovepidofep.pdf
- https://cdn.shopify.com/s/files/1/0428/2341/8019/files/modern_automotive_technology_6th_edition_free_download.pdf
- https://cdn.shopify.com/s/files/1/0447/5099/5605/files/38148023840.pdf
- https://cdn.shopify.com/s/files/1/0427/9736/7452/files/jewebazirabitegewalenite.pdf
- https://cdn.shopify.com/s/files/1/0430/8231/7975/files/67466953749.pdf
- https://cdn.shopify.com/s/files/1/0428/0814/8127/files/15344997153.pdf
- https://cdn.shopify.com/s/files/1/0431/6885/8272/files/gasatazosoruzitixak.pdf
- https://static.usrfiles.com/ugd/98857b_15ed3c491fd442d99c5aeabf8a12d56e.pdf
- https://static.usrfiles.com/ugd/8e1900_23cac6ab931e49aaac71dd28596ddee9.pdf
- https://static.usrfiles.com/ugd/07ef24_aef0cd687ebb476f97f09a8f63ac67b9.pdf
- https://static.usrfiles.com/ugd/b8c837_d6d61d92a1c948e5b88b6573c3cee4dc.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_off000066d7.binb7af831d63513f49a5ff4ac6cd6b30c671a32c9e603722e8df0cb2afa53cde53 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x66D7 | 5252 bytes |
font_01_sfnt_off000078be.bin0ba8f5b4e2dccbd8b2c5a956b88d5749593b7e88a643111c2061307a5c1bc796 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x78BE | 10496 bytes |
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