MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to potentially malicious content. One critical heuristic specifically identified a link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the link farm and redirector heuristics are sufficient to determine the attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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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/wb?keyword=japanese%20compound%20verbs%20pdf In PDF document text
- http://files.nitchtechnologies.net/uploads/1/3/1/3/131384333/a3162c81d49c.pdfIn PDF document text
- http://files.setauketmeadows.com/uploads/1/3/0/7/130775725/7763017.pdfIn PDF document text
- http://files.inlandempireinjurylaw.com/uploads/1/3/0/7/130775628/jedif-xezigerixonaliv.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://fivewawa927973821.files.wordpress.com/2020/06/wujojijimorutimux.pdfIn PDF document text
- https://sajolesogiw.files.wordpress.com/2020/07/26508073945.pdfIn PDF document text
- https://borakav.files.wordpress.com/2020/07/jewitipiwiwezateduxavi.pdfIn PDF document text
- https://zogunafika.files.wordpress.com/2020/07/rokoxurimorukerixubexag.pdfIn PDF document text
- https://zakafuzufibo.files.wordpress.com/2020/07/lilekenagiza.pdfIn PDF document text
- https://xewosinox.files.wordpress.com/2020/07/vifajumukadewukojinataj.pdfIn PDF document text
- https://wivezojajut.files.wordpress.com/2020/06/43111366054.pdfIn PDF document text
- https://wunolet428062258.files.wordpress.com/2020/06/nidebikalofo.pdfIn PDF document text
- https://tixiwufagu.files.wordpress.com/2020/06/96060306351.pdfIn PDF document text
- https://fanowaf.files.wordpress.com/2020/07/55341130213.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bivunamu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6108/4322/files/bowibololanon.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0544/3237/files/fuvedabawazupuwadatavod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuxopikuxoxixu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8038/4674/files/87756698901.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56751463133.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0460/8155/files/butifalewikofozi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2135/3635/files/94220334898.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_off00009c62.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9C62 | 5212 bytes |
SHA-256: 807ec80dd106da2d3276e8f9e44e01a46ee15e2e39c177343583aa1697c87e62 |
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font_01_sfnt_off0000ade8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xADE8 | 9928 bytes |
SHA-256: acbb1094cf902c19bd49549aa1738ebdbe0a32eb4e7455867169c67ff8178750 |
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