MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was flagged as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to obscure the ultimate destination. The presence of a 'download button' heuristic further supports the idea that the document is a lure. The primary IOC is the domain 'vilenefex.ru', which is likely the initial point of contact for a phishing or malware distribution campaign.
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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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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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=what+depth+is+10+bar PDF link annotation
- https://cdn-cms.f-static.net/uploads/4458631/normal_603ad6f2df25b.pdfIn PDF document text
- https://dilewujolar.weebly.com/uploads/1/3/5/3/135308995/gesonizaxufapir-wusirovoduvi-kozidotovu.pdfIn PDF document text
- https://xubawiki.weebly.com/uploads/1/3/1/1/131163512/mosaruvoger_muxujilopatuv.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4379970/normal_5fc97d5f506fa.pdfIn PDF document text
- https://wugupuvexiso.weebly.com/uploads/1/3/0/9/130969254/b070a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388614/normal_6015adb34834e.pdfIn PDF document text
- https://zebilukirun.weebly.com/uploads/1/3/5/3/135306511/7383255.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4467017/normal_5fec96be7fdcb.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/809c59ec-55d1-4297-9887-ec43b363ec4e/does_liam_die_in_the_darkest_minds_series.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/eb9378c6-5ac4-46a5-8f75-472406a2e8a9/what_is_the_largest_self_propelled_lawn_mower.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2e834559-28ff-46e1-9c40-ebae46057fa8/bijodugopirimo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c42720c6-5aa3-4683-81d0-c75e232ca71f/4439220500.pdfIn PDF document text
- https://s3.amazonaws.com/solonebosop/giluzidapikepen.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/19b1a738-fbf7-464c-bcb0-c999f26c2b99/60800648514.pdfIn PDF document text
- https://s3.amazonaws.com/woxewiwupir/rizarekezuwanifu.pdfIn PDF document text
- https://s3.amazonaws.com/gimisorixosu/ariens_st824_snowblower_parts.pdfIn PDF document text
- https://s3.amazonaws.com/gezejoputiwinu/zitonarupofaw.pdfIn PDF document text
- https://s3.amazonaws.com/mizeteb/skype_desktop_application_for_windows_10.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/522bd596-acaa-45ad-8a21-ee216a251cdf/sepogavonawozik.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_off0000e6bc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6BC | 5360 bytes |
SHA-256: cc98823f8fd1c29157939be7582776900cdf41a201e485a0df3741495e821ef4 |
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font_01_sfnt_off0000f8f7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8F7 | 10692 bytes |
SHA-256: c5b1cb28032dd8c38455f006b9c0f57e6b3d0e33f03f8ed1c0549ca1ca1677cb |
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