MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of external links, many of which are SEO-optimized and redirect to potentially malicious sites, as indicated by the PDF_SEO_LINK_FARM and PDF_SEO_UTM_REDIRECTOR_LINK heuristics. The primary redirector URL is 'https://jacksth.ru/strik?utm_term=beethoven+piano+sonata+no+5+in+c+minor+op+10+no+1', which is likely used for phishing or malware distribution. The ML classifier and ClamAV detection strongly support the malicious verdict.
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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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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External URI info PDF_URIPDF contains an external URL action
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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://jacksth.ru/strik?utm_term=beethoven+piano+sonata+no+5+in+c+minor+op+10+no+1 PDF link annotation
- https://s3.amazonaws.com/jemazejodep/35708247523.pdfIn PDF document text
- https://s3.amazonaws.com/megulu/popowatekexuwes.pdfIn PDF document text
- https://namazowofurap.weebly.com/uploads/1/3/4/3/134372349/d3903efb7d899.pdfIn PDF document text
- https://s3.amazonaws.com/xelimewat/ali_malli_mamai_song_mp4.pdfIn PDF document text
- https://s3.amazonaws.com/salosibejodod/jazinidixobadeno.pdfIn PDF document text
- https://s3.amazonaws.com/vapite/c_checked_vs_unchecked_performance.pdfIn PDF document text
- https://zixavuxo.weebly.com/uploads/1/3/1/3/131398386/5107855.pdfIn PDF document text
- https://s3.amazonaws.com/farokof/juwemuxatafuzapuvog.pdfIn PDF document text
- http://nonretloli.site/modern_biology_textbook_nigeria1zfhz.pdfIn PDF document text
- http://gsmall.space/discrete_and_combinatorial_mathematics_grimaldio1ujz.pdfIn PDF document text
- http://testrun.ru/transformers_beast_wars_season_1_characters3pkbc.pdfIn PDF document text
- https://s3.amazonaws.com/faduxodiwo/basic_bookkeeping_for_small_business_template.pdfIn PDF document text
- https://s3.amazonaws.com/miwolezedubujoz/67029843501.pdfIn PDF document text
- https://s3.amazonaws.com/tugumeb/love_yourself_answer_traduction.pdfIn PDF document text
- https://s3.amazonaws.com/radubozufiwo/85318088057.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fabodatutowew.epizy.com/togenodotalurewanamolivud.pdfIn PDF document text
- http://vovajixavago.epizy.com/34981566992.pdfIn PDF document text
- http://lawazujazigefon.epizy.com/equilid_50_bula.pdfIn PDF document text
- http://givemuzod.epizy.com/25142601655.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e2cd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE2CD | 5568 bytes |
SHA-256: ad982079bb5485505ab5d5d05d404e0d3f35f0ea73fc20442ebc87e3715aeb34 |
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font_01_sfnt_off0000f5a2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5A2 | 11308 bytes |
SHA-256: 032aae2d8e9d52d9ed68de17fd6cae5b8a4b597fad42d90a6036b561aa766d30 |
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font_02_sfnt_off00011b98.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B98 | 16120 bytes |
SHA-256: 73e2bae015806fcbcea00a5e77fef36cf57312733aebee32ba98308b5ce41d75 |
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