MALICIOUS
274
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
This PDF file contains multiple heuristics indicating malicious activity, including links to known malicious redirectors and a large number of external PDF links, suggesting a phishing or SEO spam campaign. The ML classifier and ClamAV detection further support its malicious nature. The primary malicious IOC is the redirector URL, which is likely used to deliver a second-stage payload or phish for credentials.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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://traffmen.ru/123?keyword=skyrim+bandit+camps In PDF document text
- https://lepuxodotedob.weebly.com/uploads/1/3/4/5/134507089/tobedesoxid.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4420600/normal_5f9c609ecc4ca.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370063/normal_5fa6ec41a9466.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/gujutavevive/catcher_in_the_rye_chapter_19-20.pdfIn PDF document text
- https://s3.amazonaws.com/muxozuvalubi/maxodabasazokolotigu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/aeb4607a-e7b6-41e1-809b-f8b4ce8effd3/13243282365.pdfIn PDF document text
- https://s3.amazonaws.com/jepavilutabilel/54787229039.pdfIn PDF document text
- https://s3.amazonaws.com/ladojenefe/9402225224.pdfIn PDF document text
- https://s3.amazonaws.com/luramamelolem/words_that_start_with_w_in_spanish_daddy.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c06d853a-0d0c-4ed5-a74d-8547f93b3282/92701706202.pdfIn PDF document text
- https://s3.amazonaws.com/piwanisaj/36759581368.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/13fb4ff2-a737-40b8-811f-db8e622b06ae/94461113827.pdfIn PDF document text
- https://s3.amazonaws.com/wonoti/alfred_adler_birth_order.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ec1b40f7-ff8c-4a12-bf1c-7f9d10548e62/38536983779.pdfIn PDF document text
- https://s3.amazonaws.com/kikunojulejuj/vebezufo.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_off0000e0c0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0C0 | 5596 bytes |
SHA-256: 186f45253c46bc9219df2d64fbec2c6f07c2f53a36cf713cf9b94623882ffedf |
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font_01_sfnt_off0000f3b3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3B3 | 11268 bytes |
SHA-256: 8e15a437656ee10ad7adacb1b370c12bacff5347c21778c84bfde1c6d7decf91 |
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