MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was identified as malicious by ClamAV and an ML classifier, with critical heuristics indicating it functions as a link farm. Numerous external URLs were extracted, many hosted on disposable domains, suggesting a phishing or SEO spam campaign. The PDF structure itself appears to be designed to host and distribute these links, likely as a lure to trick users into visiting malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 6
-
ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
-
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.
-
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.
-
External URI info PDF_URIPDF contains an external URL action
-
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.
-
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://mezovuduw.ru/award?keyword=bilirubin+metabolism+and+jaundice+pdf PDF link annotation
- https://cdn.sqhk.co/dipasupor/fjeGihX/25242646248.pdfIn PDF document text
- https://cdn.sqhk.co/xasurila/ignQVuS/buxeguvokopim.pdfIn PDF document text
- http://xitodefigatefuj.medianewsonline.com/pancreatitis_diet_uk.pdfIn PDF document text
- https://cdn.sqhk.co/xumesapaxoku/ieIhghc/waborebuwurax.pdfIn PDF document text
- https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/piwetipan.pdfIn PDF document text
- https://cdn.sqhk.co/gunonutib/jcdGhjr/cisco_catalyst_9400_data_sheet.pdfIn PDF document text
- https://sadewurepoko.weebly.com/uploads/1/3/0/7/130776460/31dc4f4febd75.pdfIn PDF document text
- http://jafoxidulez.mypressonline.com/kekunuronizaxuwopubizija.pdfIn PDF document text
- https://cdn.sqhk.co/ketusugedi/c57jhgg/love_letters_in_the_sand_pat_boone_karaoke.pdfIn PDF document text
- https://cdn.sqhk.co/waxobakal/guhdFhg/standoff_2_apk_obb_rexdl.pdfIn PDF document text
- https://zofazozudu.weebly.com/uploads/1/3/0/7/130739697/2051b47fa31d26.pdfIn PDF document text
- http://derilezin.sportsontheweb.net/who_makes_tempstar_ac.pdfIn PDF document text
- https://cdn.sqhk.co/zirixegip/Ppih0VS/12230501024.pdfIn PDF document text
- http://naverako.iblogger.org/adverbs_exercises_intermediate.pdfIn PDF document text
- https://vosuzujil.weebly.com/uploads/1/3/2/6/132681517/744669e4bafe.pdfIn PDF document text
- http://vogolimipogusoz.mypressonline.com/hindu_baby_boy_names_with_meaning.pdfIn PDF document text
- http://nuwazomesesanok.mygamesonline.org/felotavolabemuninok.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://d451e762-8e00-4155-9971-9512d28d2528.filesusr.com/ugd/b52961_6de9ef904989463f9d4297a886819743.pdf?index=trueIn PDF document text
- http://zikenonuto.epizy.com/assessable_spouse_election_form_where_to_send.pdfIn PDF document text
- http://nalakakowim.epizy.com/30032935950.pdfIn PDF document text
- https://40ba1f7a-6e91-49bb-bbb8-dfbb40a2bc60.filesusr.com/ugd/22bf55_910b3bce4f2043b7b047faedb86bfc1f.pdf?index=trueIn PDF document text
- https://2ddedb0e-b7b0-41c9-a8bc-c018bd0e6e4c.filesusr.com/ugd/70094d_a41e73993ba54c05a25282e18bd55f37.pdf?index=trueIn 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_off000117f8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x117F8 | 5564 bytes |
SHA-256: da2442dbfb55f27aca879f282506411973f389638b29ddb3baeac48e713fb52b |
|||
font_01_sfnt_off00012aca.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12ACA | 11800 bytes |
SHA-256: 82dbf5c8ef8a45804fc77878be76884b546a7c2312a26fe6d1721c9b8ab0720c |
|||
Open this report in the interactive analyzer, or submit your own file for analysis.