MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file is identified as malicious by multiple heuristics and an ML classifier, with ClamAV detecting it as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, suggesting it's part of an SEO spam or link farm operation. The document body, though heavily obfuscated, appears to be a lure for 'Psychology unit 3 exam answers', directing users to external URLs like https://pelibifir.ru/wix?keyword=psychology+unit+3+exam+answers.
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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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://pelibifir.ru/wix?keyword=psychology+unit+3+exam+answers PDF link annotation
- https://cdn-cms.f-static.net/uploads/4421630/normal_601259b4069b1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367283/normal_601ba98ee2069.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447884/normal_60331b00c8950.pdfIn PDF document text
- http://vujuxivawopigu.22web.org/wulevev.pdfIn PDF document text
- https://cdn.sqhk.co/xutujipux/Fdjh2eg/53688285427.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4501645/normal_5fe77f8d6c258.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4478951/normal_601d6cfab593c.pdfIn PDF document text
- https://cdn.sqhk.co/gafisasiwu/eQB4kgd/temple_run_2_zip_file_download.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://21c505bb-01ca-4817-a549-4ed1ebba5040.filesusr.com/ugd/7d7105_2e27352eeea9477b95a3afbbfdf5a2a9.pdf?index=trueIn PDF document text
- https://67389751-14cc-4ed3-b660-7ef7239e4cc3.filesusr.com/ugd/bb5584_8a07f70498534cbf99645f89c7dc0e45.pdf?index=trueIn PDF document text
- http://wexotorat.rf.gd/sikutavulutalifasosipopi.pdfIn PDF document text
- https://64e18f06-8a0e-4dc1-8427-9dd81b4bff36.filesusr.com/ugd/baa514_6447a935e97d4033842dc0c2d612304f.pdf?index=trueIn PDF document text
- http://datuzijopo.epizy.com/ducateur_de_chien_guide_d_aveugle.pdfIn PDF document text
- https://0296ecfc-28ae-4fa5-925c-67a25994cace.filesusr.com/ugd/c88839_2b75c9a659fe4daca69988a47eb7704e.pdf?index=trueIn PDF document text
- https://7e8267f5-6380-480e-ad72-df526eaefc07.filesusr.com/ugd/cbe325_2a6ca67facda4bfc96f371498eaf836a.pdf?index=trueIn PDF document text
- https://a3720f92-bdaa-4449-a3ff-14f36884d2d5.filesusr.com/ugd/afadc3_aceb283706a7449a8ad875daacb9b569.pdf?index=trueIn PDF document text
- https://1a6defe7-92a0-4357-8a70-d3bce85d30c9.filesusr.com/ugd/385065_42f2de7e3ea743eab81b6bb061843a9b.pdf?index=trueIn PDF document text
- https://368051e9-4199-40ea-b9a2-dc6e6f83cb3b.filesusr.com/ugd/6260fe_397c67ff084a45f89a518f79fdbb4d4c.pdf?index=trueIn PDF document text
- http://puxedasepuk.epizy.com/malayalam_movies_2019_sites.pdfIn PDF document text
- http://zegupevisosid.epizy.com/ielts_recent_actual_test_reading.pdfIn PDF document text
- https://3f735f5a-cd1c-4288-bd93-adeff6e084d9.filesusr.com/ugd/bcc0e4_7d7898b9741446cbbc81a223db47d931.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_off0000d4cc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4CC | 5640 bytes |
SHA-256: 7e5397ca30e0c18dbb212add253850eb6cce3f63fa785a06fdf8ae9af7ea48e3 |
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font_01_sfnt_off0000e7ef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7EF | 10988 bytes |
SHA-256: 6c8b10c6dfc3d896ab0c5382a7f5a83d6292c858c9fda14d6c944b88e56ec858 |
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