MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It contains a large number of embedded URLs, functioning as a link farm. One of these URLs, 'https://yafferge.ru/wix?keyword=aok+and+wok+list', is flagged as a known malicious redirector. The PDF's structure and the presence of numerous links suggest an attempt to lure users to malicious sites, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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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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://yafferge.ru/wix?keyword=aok+and+wok+list In PDF document text
- https://paxogusav.weebly.com/uploads/1/3/4/0/134040839/bagisiwasim.pdfIn PDF document text
- https://xasukibumit.weebly.com/uploads/1/3/4/7/134749231/motoxisekojimud_vonimezuduw.pdfIn PDF document text
- https://rugadugunat.weebly.com/uploads/1/3/1/6/131606951/kajixaro_tukerojefegaziv.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470207/normal_604463ad8ea37.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366660/normal_6046e6d5a8241.pdfIn PDF document text
- https://wegoboxup.weebly.com/uploads/1/3/4/7/134772399/weputemagofe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4466153/normal_6023caf7b6d0d.pdfIn PDF document text
- https://benanuvez.weebly.com/uploads/1/3/0/8/130813453/7227171.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4389797/normal_6041b529d7df3.pdfIn PDF document text
- https://dutizadip.weebly.com/uploads/1/3/4/8/134889078/zemogatudetore.pdfIn PDF document text
- https://selokifasafu.weebly.com/uploads/1/3/4/3/134383977/7134922.pdfIn PDF document text
- https://farigelud.weebly.com/uploads/1/3/4/2/134266281/faxuxakewe.pdfIn PDF document text
- https://kuvinobugo.weebly.com/uploads/1/3/1/3/131383931/rejevami-tazubenej-kakevel.pdfIn PDF document text
- https://penugevofubelig.weebly.com/uploads/1/3/1/1/131164238/1980160.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://3b0fe5ff-7f86-489c-8138-fc984e51136c.filesusr.com/ugd/bfd78a_ceed01d4f714491a9564db3deb5b196f.pdf?index=trueIn PDF document text
- https://be1d055c-b83b-422e-9e68-1bf13cef350c.filesusr.com/ugd/5b1e3c_9f85aec15d394871bdbe33e5e44c25e5.pdf?index=trueIn PDF document text
- https://042e50b4-45d0-4577-915a-c14d43ab21ad.filesusr.com/ugd/18f527_8dd67370dea54f2f928af5ac3d8f9a68.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/bezutu/7351226490.pdfIn PDF document text
- https://s3.amazonaws.com/muwemivumazulax/21809756838.pdfIn PDF document text
- https://s3.amazonaws.com/vuliwisuwig/15173890787.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_off0000f6ed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6ED | 4868 bytes |
SHA-256: 95a39fa7dce6eb3e53e311eb9e29a57d6365e0413b25099e370acd6fb7fde860 |
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font_01_sfnt_off000107a5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107A5 | 10376 bytes |
SHA-256: 95cf79bbd9beb70b087b58d926b352517ed3bdf3157bbf6daaf4ddf1fcec134c |
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