MALICIOUS
226
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document contains numerous external links, many pointing to disposable domains, suggesting a link farm or phishing lure. The presence of a suspicious link to 'securityofusersdevicesonline.site' and the ML classifier's high confidence score indicate malicious intent. The document body, though heavily obfuscated, contains text related to advance notice and application metadata, which likely serves as a pretext to disguise the malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LUREPDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
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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://midufefew.ru/wix?keyword=thank+you+for+your+advance+notice PDF link annotation
- https://cdn-cms.f-static.net/uploads/4388041/normal_60394f13d22f1.pdfIn PDF document text
- https://cdn.sqhk.co/gijosevozu/hbPcqgc/color_balloons_meaning_acnh.pdfIn PDF document text
- https://cdn.sqhk.co/mikevoponage/VigJib0/debuzuvalileser.pdfIn PDF document text
- https://cdn.sqhk.co/xevowuto/ewgOqs3/race_timers_for_running.pdfIn PDF document text
- http://italiabeach.space/brawlhalla_val_movesp2vgr.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367279/normal_602aa611c0f4e.pdfIn PDF document text
- https://pawonojureva.weebly.com/uploads/1/3/4/5/134522231/vevafepiromibi_larolipiso.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4418362/normal_5fea0815f0016.pdfIn PDF document text
- http://prazdnikprosto.ru/macy_s_at_pentagon_city_mall_addressizo6q.pdfIn PDF document text
- https://vigenawora.weebly.com/uploads/1/3/4/4/134495248/dasofasorarilem.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393197/normal_603a085f3f98e.pdfIn PDF document text
- http://repair-monokoles.ru/wopixeruxudi98o83.pdfIn PDF document text
- http://securityofusersdevicesonline.site/burp_collaborator_clientaytza.pdfIn PDF document text
- https://nigafabap.weebly.com/uploads/1/3/4/3/134377596/buredomaxuwisuv.pdfIn PDF document text
- http://kurixuj.sportsontheweb.net/51767132809.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454984/normal_6015b9d38c4bd.pdfIn PDF document text
- https://jejepijukutu.weebly.com/uploads/1/3/4/1/134131362/126d1990c8.pdfIn PDF document text
- https://safusugefivelu.weebly.com/uploads/1/3/4/3/134346528/10439f.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- http://wazipegemezen.atwebpages.com/el_conde_lucanor_castellano_antiguo.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ea90.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA90 | 4956 bytes |
SHA-256: 9859824609cfb4347d17726472d25d1f0c98043d18c156b66efecab282b5abcc |
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font_01_sfnt_off0000fb69.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB69 | 10484 bytes |
SHA-256: 21d921770ca6429d32d282d96b4ff5120690fc35607738ff8acbf92a2d958799 |
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font_02_sfnt_off00011f2a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F2A | 4324 bytes |
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
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