MALICIOUS
254
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file contains a large number of external links, many of which point to redirector infrastructure. The primary redirector URL is https://yafferge.ru/123?utm_term=latex+table+format+numbers, which likely leads to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with a phishing lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://yafferge.ru/123?utm_term=latex+table+format+numbers In PDF document text
- https://cdn-cms.f-static.net/uploads/4392215/normal_600d2914c5263.pdfIn PDF document text
- https://degevibuv.weebly.com/uploads/1/3/5/3/135316410/dojuta.pdfIn PDF document text
- https://vinixojaz.weebly.com/uploads/1/3/5/3/135312356/dasori.pdfIn PDF document text
- https://berebexamoleti.weebly.com/uploads/1/3/1/3/131384136/5712447.pdfIn PDF document text
- https://mewejubakokexal.weebly.com/uploads/1/3/2/6/132681976/1421003.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4422382/normal_5fe5d4e7d52cf.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4386824/normal_5ff507828c7f5.pdfIn PDF document text
- https://safalijig.weebly.com/uploads/1/3/1/0/131070993/danupumusixis.pdfIn PDF document text
- https://lebotisoko.weebly.com/uploads/1/3/4/5/134597635/af6c6e99.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413373/normal_5fea37ef474cc.pdfIn PDF document text
- https://vigoruso.weebly.com/uploads/1/3/4/1/134131386/towogopafapitin.pdfIn PDF document text
- https://midodelawipage.weebly.com/uploads/1/3/4/5/134585137/vififasaken.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4377381/normal_600dcb215966a.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/wuniku/15212024801.pdfIn PDF document text
- https://s3.amazonaws.com/sefukirexuwekij/27762156856.pdfIn PDF document text
- https://s3.amazonaws.com/xulikamul/83962280966.pdfIn PDF document text
- https://s3.amazonaws.com/mawesenasijoser/nezixixavudov.pdfIn PDF document text
- https://s3.amazonaws.com/xeponodij/56252488281.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000143eb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x143EB | 4896 bytes |
SHA-256: e035fff0d2fbd5b2ec7063b3cb72eb9c7a190646b2d61df9b7be1ad518201812 |
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font_01_sfnt_off0001547c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1547C | 11520 bytes |
SHA-256: 378276383bef49c116670d10abf6e5006d3b96d813c32631f7d2f8cd45626960 |
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font_02_sfnt_off00017b96.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17B96 | 4324 bytes |
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378 |
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