MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was identified as malicious by multiple heuristics and a machine learning classifier. It contains a large number of external links, many of which are SEO-optimized and redirect to potentially malicious sites, such as the primary redirector at https://leonvi.ru/strik. The document's structure and embedded links suggest it is designed to act as a link farm or phishing lure, directing users to external content that is likely malicious. No scripts were extracted, but the PDF structure itself facilitates the attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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://leonvi.ru/strik?utm_term=how+many+ar+points+is+the+maze+runner PDF link annotation
- https://xapukaxefibaj.weebly.com/uploads/1/3/4/7/134772468/reberabedil.pdfIn PDF document text
- https://pexivepod.weebly.com/uploads/1/3/5/3/135346377/6ebdc13a94.pdfIn PDF document text
- https://letazofuwukuge.weebly.com/uploads/1/3/4/8/134869061/5154604.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465930/normal_603bef2274852.pdfIn PDF document text
- https://bewebisiseten.weebly.com/uploads/1/3/0/8/130874130/bufovuzebowopok.pdfIn PDF document text
- https://mojipodo.weebly.com/uploads/1/3/4/5/134592530/fojok_watoruva.pdfIn PDF document text
- https://zawasofolebu.weebly.com/uploads/1/3/4/9/134902788/a5845af.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4459320/normal_5fc833bab72d2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368496/normal_60622e610ef35.pdfIn PDF document text
- https://jedunifoxawixe.weebly.com/uploads/1/3/4/4/134458330/7910103.pdfIn PDF document text
- https://takoremitivo.weebly.com/uploads/1/3/0/7/130738963/litazozuvu.pdfIn PDF document text
- https://bifawodeg.weebly.com/uploads/1/3/5/3/135348479/xumawivofutopet-menixukaxuwide.pdfIn PDF document text
- https://remofixar.weebly.com/uploads/1/3/0/7/130776049/af9d7f9fd30f.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/didowugorokirug/are_cooling_racks_and_baking_racks_the_same.pdfIn PDF document text
- https://s3.amazonaws.com/vufuzewasi/rirominufameza.pdfIn PDF document text
- https://s3.amazonaws.com/rufonali/88558399052.pdfIn PDF document text
- https://s3.amazonaws.com/fajujiju/zidoripanelemibozusosipir.pdfIn PDF document text
- https://s3.amazonaws.com/pomaxa/lord_of_the_flies_study_guide_chapter_4.pdfIn PDF document text
- https://s3.amazonaws.com/farezelof/mechanical_engineering_drawing_exercises.pdfIn PDF document text
- https://s3.amazonaws.com/tudawufed/7130806086.pdfIn PDF document text
- https://s3.amazonaws.com/fezenur/90397675795.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_off0000cffd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFFD | 5232 bytes |
SHA-256: e3be6347c9caa5c5bc6afc0a316cb35841ddca8b2e8cf72e2f3a4e9237b5f550 |
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font_01_sfnt_off0000e1b4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE1B4 | 10484 bytes |
SHA-256: aef3b4f715720470ea2fe9650342b1193e25191d77c07712b840027b67fa44cf |
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