MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains a large number of embedded links, many of which point to disposable domains and are likely part of a link farm. Crucially, one of the embedded URLs is identified as a known malicious redirector. The ML classifier and ClamAV also flagged this PDF as malicious, indicating a phishing or trojan distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 6
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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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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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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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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://crophysi.ru/strik?utm_term=biological+value+of+carbohydrates+pdf In PDF document text
- https://pakokapixufepu.weebly.com/uploads/1/3/4/6/134659136/8ca447fc3cd96b.pdfIn PDF document text
- https://vovowiki.weebly.com/uploads/1/3/2/3/132303124/82d63e0cc7402ae.pdfIn PDF document text
- https://mavuweginu.weebly.com/uploads/1/3/2/6/132681431/dutuf-mojazavigejuri-luporuketif-rilajenitew.pdfIn PDF document text
- https://zefurevexas.weebly.com/uploads/1/3/5/3/135399706/a7b6f61b330.pdfIn PDF document text
- https://giwizakewat.weebly.com/uploads/1/3/1/8/131857916/2917807.pdfIn PDF document text
- https://kuvukodu.weebly.com/uploads/1/3/1/4/131453249/tesaxoba.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4475571/normal_6053e410b5a2c.pdfIn PDF document text
- https://mexukisigugat.weebly.com/uploads/1/3/4/7/134702857/lulafudipukene.pdfIn PDF document text
- https://sarurudadolixo.weebly.com/uploads/1/3/4/6/134644817/5f23f4e34fba935.pdfIn PDF document text
- https://gerugufudob.weebly.com/uploads/1/3/4/8/134869234/zujop-padurujoduza-rabuvik.pdfIn PDF document text
- https://juponujebiz.weebly.com/uploads/1/3/4/7/134773331/jufugokewiboxuf.pdfIn PDF document text
- https://jajaleregonu.weebly.com/uploads/1/3/4/2/134235513/f078305.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465557/normal_603a984057301.pdfIn PDF document text
- https://manoduxasef.weebly.com/uploads/1/3/4/0/134041035/wudunanurukolowikude.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4445877/normal_60241c2b86c84.pdfIn PDF document text
- https://libepuve.weebly.com/uploads/1/3/1/4/131407284/revevaf-bunasajuz-bugikaneko-kitopiloguzogi.pdfIn PDF document text
- https://japapitamamevoj.weebly.com/uploads/1/3/2/7/132740309/6643571.pdfIn PDF document text
- https://romesezex.weebly.com/uploads/1/3/4/6/134605020/jenetuboxari_vusebujozew_xuzawamajan_darasizatebi.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/e3a1b7c4-bb41-4b79-a753-8bbaf50701ea/how_to_submit_ei_report_by_mail.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e4651903-ebd9-4ce5-92ab-8008f2fe0e80/4118334033.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/faf6d20b-1e49-493d-aad9-78d9c099f8d1/gurenaromofo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ba4af816-7638-4141-bfc0-016bed692fe6/gone_with_the_wind_cast_members.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_off0000e9f8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9F8 | 5768 bytes |
SHA-256: b3bedd990fabc148aad9ba7d3b75c8956685fe284fffdb34fdc4eafee6d382d8 |
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font_01_sfnt_off0000fda8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDA8 | 10744 bytes |
SHA-256: ea7dde32a05bedddc9885cb78cfb6e2ff32457f17b4cbcef7dfc406e9f0e3036 |
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