MALICIOUS
334
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF contains multiple heuristics indicating malicious intent, including links to known malicious redirectors and a large number of external links suggestive of a link farm. The document also instructs users to copy and paste content into command-line interfaces, a common lure for executing malicious commands. The presence of ClamAV detection and ML classification further supports its malicious nature, likely serving as a phishing or malware distribution vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 8
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LUREDocument tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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/strik?utm_term=arris+tg862+reset+password In PDF document text
- https://cdn.sqhk.co/wefonasifaza/ih0WDif/books_to_learn_spanish_from_scratch.pdfIn PDF document text
- http://detonic-romania.website/24549162393m0vi1.pdfIn PDF document text
- https://valofapapedor.weebly.com/uploads/1/3/1/1/131164243/wigikowerebu.pdfIn PDF document text
- http://xipelosowux.22web.org/45430700802.pdfIn PDF document text
- https://zefemebok.weebly.com/uploads/1/3/0/7/130775969/vefamow_jigurewujapomam_zugodomakijodi.pdfIn PDF document text
- https://cdn.sqhk.co/sepagumal/gTIbggJ/ragifubiginiwufezab.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/levovod/5th_grade_lattice_multiplication_worksheets.pdfIn PDF document text
- https://s3.amazonaws.com/jevelel/msbte_question_paper_with_answer_winter_2016.pdfIn PDF document text
- https://s3.amazonaws.com/mefadedosuw/bin_nh_piano_sheet.pdfIn PDF document text
- https://s3.amazonaws.com/varolexexus/does_canada_require_gre.pdfIn PDF document text
- https://s3.amazonaws.com/kalanejaxutilif/74615800225.pdfIn PDF document text
- https://s3.amazonaws.com/mokuwanibof/kanonolevowutaju.pdfIn PDF document text
- http://sesunofopum.epizy.com/96397128071.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_off0000df51.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF51 | 5336 bytes |
SHA-256: 11d983c22c91a42c28f616d543b6d1380196cff04d99ee068b73d616ccd61250 |
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font_01_sfnt_off0000f18e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF18E | 10500 bytes |
SHA-256: acb846f1e0e4f0d1a4e4d0d7e60387e2c707f27c8cc3f22790e7e09ea9249eec |
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font_02_sfnt_off00011548.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11548 | 4324 bytes |
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
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