MALICIOUS
226
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document contains numerous external links, many pointing to disposable domains and likely serving as a link farm. The heuristic 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly indicate this behavior. The ML classifier and ClamAV detection further support its malicious nature, suggesting it's designed to redirect users to potentially malicious content or phishing sites.
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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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=wiley+organic+chemistry+solutions+manual+pdf PDF link annotation
- https://cdn.sqhk.co/bajowekununa/bOxhKja/nutojumebulele.pdfIn PDF document text
- http://nosinoski.shop/kiduz2jjde.pdfIn PDF document text
- https://girewatadetax.weebly.com/uploads/1/3/2/6/132681062/3fa1a2a70ade5.pdfIn PDF document text
- http://privateguardingserviceagainstdanger.site/77858419350uwcrc.pdfIn PDF document text
- https://vuvuzuvikedatun.weebly.com/uploads/1/3/4/5/134529562/191b743fe.pdfIn PDF document text
- https://cdn.sqhk.co/pejibuti/iiQjbja/tadanufarebab.pdfIn PDF document text
- https://nafusulujaj.weebly.com/uploads/1/3/4/5/134596397/risisan_sudizogizi_kunuminexevazir.pdfIn PDF document text
- http://blablablacar.online/lexetokebinas1tjx1.pdfIn PDF document text
- http://digitalmicroteter.xyz/sap_inbound_delivery_serial_number_tablevrdd3.pdfIn PDF document text
- http://lumogodasekepi.mypressonline.com/5198057271.pdfIn PDF document text
- https://cdn.sqhk.co/dulunukosep/LgdjddE/86034941964.pdfIn PDF document text
- https://cdn.sqhk.co/jumibizede/gc35hj3/video_editor_with_music_free.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/f5c40615-a8c3-4432-82e0-bb2b60fcbf2f/mini_dv_converter.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f77ead94-bdb0-46a2-94bd-da21d253dfd4/37196596210.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a79d37c7-2eb1-4e3d-828c-9a9aa2561ca1/lavorin.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6c47b9af-4a41-4e26-bb60-682b214c5c9c/logitech_z623_review_audiophile.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0d8236e6-8c36-4ba5-926a-264b8a75650a/what_are_the_symbols_on_the_dashboard.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/58b9f562-6d41-4006-9392-e5c72f771b5d/teguforulovodulavabegisif.pdfIn PDF document text
- http://jisijuvod.myartsonline.com/dodge_ram_2500_oem_parts_diagram.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_off0001365a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1365A | 5684 bytes |
SHA-256: d0248ee61823638688b5101a2990644355d52b16a3097500ca1deb04df5d79af |
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font_01_sfnt_off00014999.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14999 | 11008 bytes |
SHA-256: b9a61632f1bcf19174e89f1245c8ccb68459acb2fb7a95a978f46b9e3e991c70 |
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