MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous external links, many pointing to disposable hosting, and one specific URL `https://dugedepap.ru/strik?utm_term=chess+puzzle+answer` which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create malicious PDFs.
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://dugedepap.ru/strik?utm_term=chess+puzzle+answer PDF link annotation
- https://static.s123-cdn-static.com/uploads/4471479/normal_60029500280f9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373239/normal_6040a0ea848db.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4410441/normal_5ff7ec476e20d.pdfIn PDF document text
- https://zodijezuworid.weebly.com/uploads/1/3/1/4/131483265/140566.pdfIn PDF document text
- https://tozuxixawijere.weebly.com/uploads/1/3/4/5/134523333/6924242.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4500677/normal_6063bfab60d7d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4498997/normal_600a768d157e0.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4491673/normal_5ff496bb91e28.pdfIn PDF document text
- http://lisifakus.66ghz.com/chefman_digital_air_fryer_manual.pdfIn PDF document text
- http://xurijozidarov.22web.org/antminer_s9i_firmware.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388165/normal_601226617e96f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375199/normal_5fe8ad180dbdc.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4473638/normal_5fe3b62f641ac.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://78a3f932-2eca-4366-91b9-d52a2f3c5f58.filesusr.com/ugd/a586f9_f461e5eed2d5488598b2a5e4ec6590a6.pdf?index=trueIn PDF document text
- http://niforubuduxema.epizy.com/wopojeloj.pdfIn PDF document text
- https://bf808793-8b46-4c54-8b11-319763181fa0.filesusr.com/ugd/0d018b_0a578a52efa74e358390b3e204e88321.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/lazolu/1092681233.pdfIn PDF document text
- https://c3438639-6a75-4920-aa4f-d1e0b619354f.filesusr.com/ugd/3be3a7_cc7654463023423daba803ba3aa4c4f2.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/suzixegazunow/tenilujujuwikisuze.pdfIn PDF document text
- https://ffb80149-315c-4936-8637-e87477b606fc.filesusr.com/ugd/e7410d_1ac26e1423164d4fae79fd5c6e148dc9.pdf?index=trueIn PDF document text
- http://kotixetoxuxosa.epizy.com/amcon_act_2020.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_off0000e41c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE41C | 4952 bytes |
SHA-256: 491ae555bd9503e4eb1fc0e9a2e89348029ea35375a2b03085156170979949e7 |
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font_01_sfnt_off0000f501.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF501 | 11424 bytes |
SHA-256: dbf98b4c715d3e78ed00fb8646a3c36d73ed625cfd7a6503ff86ccad9ba2ebea |
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