MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to distribute malicious content or phish users. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics strongly indicate malicious intent, with ClamAV identifying it as 'Pdf.Phishing.Trojan'. The document body, though heavily obfuscated, contains references to 'firmware upgrade' and 'wkhtmltopdf', likely serving as a lure to encourage clicks on the embedded malicious URLs.
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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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=perc+h700+firmware+upgrade PDF link annotation
- https://morogixifidogaj.weebly.com/uploads/1/3/4/4/134497599/f6ba22b.pdfIn PDF document text
- http://zdorovienashevse.xyz/4320649192241gg.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4443362/normal_6039e1b83f9a9.pdfIn PDF document text
- https://lomojibopizan.weebly.com/uploads/1/3/4/8/134886372/pafadezixakesup.pdfIn PDF document text
- http://trysoda.club/56777532605kydd4.pdfIn PDF document text
- http://endi-itali.space/venom_wallpaper_4kdjufj.pdfIn PDF document text
- http://christmas-gift.ru/buludulojovekaglxc8.pdfIn PDF document text
- https://wugedelujexot.weebly.com/uploads/1/3/1/4/131456191/fexatimepore-pinetulegepuvu-kupulufipigu.pdfIn PDF document text
- http://clubstore.info/donde_estudiar_marketing_digital_en_lima_peruztf24.pdfIn PDF document text
- https://cdn.sqhk.co/jekenilegefe/BzWhcif/live_sports_hd_tv_pc.pdfIn PDF document text
- https://rozomibevepozif.weebly.com/uploads/1/3/0/7/130775668/xamasexoxun_bazogelumobemi_gisupemuje.pdfIn PDF document text
- https://lepovomika.weebly.com/uploads/1/3/4/7/134701686/4099091.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446151/normal_6016c2e769374.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365536/normal_603cb701de6f3.pdfIn PDF document text
- https://cdn.sqhk.co/nukebomevobe/hjlih9A/77612713584.pdfIn PDF document text
- https://tosoremekik.weebly.com/uploads/1/3/4/7/134771766/45500.pdfIn PDF document text
- https://tolibalib.weebly.com/uploads/1/3/4/7/134714968/8724882.pdfIn PDF document text
- https://cdn.sqhk.co/nedupugifuka/OhgKEwc/dufidu.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://vaxaguv.rf.gd/is_it_legal_to_play_online_poker_in_new_york.pdfIn PDF document text
- http://genosumexeser.epizy.com/mds_3.0_training_online.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_off00010388.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10388 | 5676 bytes |
SHA-256: 8cd229a462411e10eb408f562c8ba2cce0883b45e1ff4d7d500cf08eb5118a31 |
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font_01_sfnt_off000116c5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x116C5 | 11556 bytes |
SHA-256: 8eddb2e24517152367011241b60171f9067307bc3f6e038ac4942fef11af8ee5 |
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