MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a high number of embedded links, many of which point to a redirector URL disguised as a design guide. This indicates a link farm or SEO poisoning tactic to lure users to malicious infrastructure. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=class+d+amplifier+design+guide In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0462/2696/4631/files/abduction_full_movie_free_online_no.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3695/9139/files/17587938634.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7990/1096/files/pugunajatilurijelil.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5896/1320/files/f_b_service_training_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/2931/4206/files/archives_of_nethys_celestial_template.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7506/6273/files/21879586076.pdfIn PDF document text
- https://static.usrfiles.com/ugd/a382ee_eef8cc99361e48349735fc49d3144cde.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_b0c8a07c63bc4490848aecc2d8d2a1b7.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_0c5db20b1182413285f81f951a5e9a2c.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_0f3b9c2cb1cd470db88665cd18bc7821.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000602f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x602F | 5268 bytes |
SHA-256: 32f986d51a3944e57ea8f0197dda12be3d03dda1294474ec2ca2607f2908f9d9 |
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font_01_sfnt_off00007202.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7202 | 10628 bytes |
SHA-256: 24c65c2e4bd3b9678f52e02c29a2b9e13c067cdf4c5e93496d255cd84f1585d6 |
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