MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was flagged by multiple heuristics and an ML classifier as malicious, specifically identified as a phishing trojan by ClamAV. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The primary malicious URL identified is https://pelibifir.ru/strik. No scripts were extracted, but the PDF structure and link farm behavior indicate a likely attempt to redirect users to malicious sites.
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://pelibifir.ru/strik?utm_term=how+to+calculate+mass+with+density+and+length PDF link annotation
- https://s3.amazonaws.com/fifomi/japan_travel_guide_blogger.pdfIn PDF document text
- http://mebel-albero.ru/4897109631061dg7.pdfIn PDF document text
- https://s3.amazonaws.com/bolovopizonuki/basenetidesidilinowa.pdfIn PDF document text
- https://jaxazinozusepir.weebly.com/uploads/1/3/4/2/134235406/nomowolani_losurivibusofi_beruviretubofan.pdfIn PDF document text
- https://sapigufebo.weebly.com/uploads/1/3/4/5/134592603/wazazidut.pdfIn PDF document text
- https://gizajowi.weebly.com/uploads/1/3/4/3/134314542/wirikolaf.pdfIn PDF document text
- https://s3.amazonaws.com/zodererezuzuxi/organizational_culture_4_types.pdfIn PDF document text
- https://cdn.sqhk.co/vizinifum/ih0hejj/soccer_revolution_2021_program.pdfIn PDF document text
- https://cdn.sqhk.co/zeritogekuja/Vgijgib/wigomemaxexulav.pdfIn PDF document text
- http://vash-fasad.live/valor_vendor_ashrangebw10u.pdfIn PDF document text
- https://texoxarisozitew.weebly.com/uploads/1/3/0/9/130969357/betaxekipub.pdfIn PDF document text
- http://wirelessinfo.ru/954092101167fstw.pdfIn PDF document text
- http://salleop.xyz/oh_butterfly_tamil_video_song_freeik2p0.pdfIn PDF document text
- http://strgb2.ru/excalibur_car_alarm_remotekio15.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/7008ed42-4cd0-4801-9787-6670eb78267a/how_to_volunteer_at_a_hospital_near_me.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8e1ac74c-5b56-435e-91e3-1703044b9015/vemopekugiw.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4cdfea8e-d001-460f-8e98-d3da1ebeebbb/pogabekamokisejakef.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5d2be509-4bb8-4d5f-9f0b-2ac89dd9c668/temomoruzutusanob.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8a06df8d-d675-41f3-b678-dc6ebd5fbef8/past_simple_vs_past_continuous_exercises_multiple_choice.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5bd3048b-3850-4636-9f8e-025b25a2d175/72837233341.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e6989336-4484-4603-b00c-1488d7b44f7a/sound_blaster_z_se_review.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_off0000e34f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE34F | 5412 bytes |
SHA-256: d275e4060f272c7e1c8047a5c7a18d7bb6b2fe2706da2fddfd1af08d72df753a |
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font_01_sfnt_off0000f5ab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5AB | 11212 bytes |
SHA-256: c460d2b079a6c09a470e770a4dda206c96013b0018b7c2eb47899230b9ee9416 |
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