MALICIOUS
226
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO poisoning attack. The document body, though heavily obfuscated, appears to be a lure related to search queries. The presence of PDF_SEO_LINK_FARM and SE_CLICKFIX heuristics indicates a social engineering attempt to redirect users to malicious sites. ClamAV detection and ML classification confirm its malicious nature, likely as a phishing or trojan delivery mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9961
Heuristics 7
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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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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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ClickFix social engineering attack high SE_CLICKFIXDocument instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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://vilenefex.ru/strik?utm_term=how+many+carbs+in+a+dunkin+donuts+sesame+bagel
- https://pevusipifo.weebly.com/uploads/1/3/4/8/134863194/1b7212b7fd33.pdf
- https://dopakegufa.weebly.com/uploads/1/3/1/3/131384718/rijozezinavizukow.pdf
- http://dipufuvolog.iblogger.org/53348119311.pdf
- https://sebinegovana.weebly.com/uploads/1/3/4/0/134095930/8797026.pdf
- https://lezevonunibo.weebly.com/uploads/1/3/4/5/134577944/ridulibilezumavef.pdf
- https://mukeluxera.weebly.com/uploads/1/3/4/5/134528716/pikibibakejexiduva.pdf
- https://fakebomazeb.weebly.com/uploads/1/3/1/4/131453402/tijelutov.pdf
- http://tajavimisafom.22web.org/outlook_out_of_office_holiday_template.pdf
- https://zokelafeg.weebly.com/uploads/1/3/4/8/134889419/6ee40617821fcd2.pdf
- https://bijawodit.weebly.com/uploads/1/3/4/8/134883407/4d1c47e2b158.pdf
- https://lepabamun.weebly.com/uploads/1/3/1/6/131636917/1ee4e8.pdf
- https://repemokalit.weebly.com/uploads/1/3/1/8/131856723/4224951.pdf
- https://pumelagu.weebly.com/uploads/1/3/2/8/132814433/resifajese_nanakage_logijemuwux_zuvivefitujope.pdf
- https://muwirejevom.weebly.com/uploads/1/3/1/8/131857435/vukebavusi_lusosedenadid.pdf
- https://susemozud.weebly.com/uploads/1/3/2/8/132814624/minajadu_kusefokopob_fubodivazis.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://furovival.rf.gd/jama_sepsis_2020_espaol.pdf
- https://s3.amazonaws.com/bokexizometun/dns-320l_custom_firmware.pdf
- https://uploads.strikinglycdn.com/files/3e64fca4-97a2-48e1-bd91-92c9b980d1ff/sijasexibuvuvoxolujoki.pdf
- https://uploads.strikinglycdn.com/files/b9a2a908-cbbf-4ec3-b836-e1699af05dad/max_lucado_inspirational_study_bible_large_print.pdf
- https://s3.amazonaws.com/zuvovoxigumuz/bolagomudub.pdf
- https://uploads.strikinglycdn.com/files/51c80d29-2a28-4077-92b9-def932de8b2a/radionovela_chucho_el_roto_wikipedia.pdf
- https://uploads.strikinglycdn.com/files/d150279e-891f-45e2-9a37-e43ff5e4dfa1/gozibubilewera.pdf
- https://s3.amazonaws.com/bubisifapagefe/52137040293.pdf
- http://xopidevuk.rf.gd/68857639350.pdf
- https://uploads.strikinglycdn.com/files/549a2930-cb86-4f43-bdcd-9c3cfe9e25dc/66711185677.pdf
- https://s3.amazonaws.com/kexamoxusinixu/mafafojenujuxuxijipur.pdf
- http://demuremapinob.epizy.com/patalaworajibevuvobe.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00012112.binad9a51e2ff4bf13a0e9c34dba83a9dacaa7fb94a34eafde2ac0f4b791d4a168a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12112 | 5620 bytes |
font_01_sfnt_off00013426.bin5cd0446aaa7a58fc3c91c3b037fc4dbcdee9cf9a73ad2a699938243c2326efdc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13426 | 11340 bytes |
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