MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with at least one pointing to a domain associated with phishing or malware distribution ('bologen.ru'). The document body, though heavily obfuscated, suggests a lure related to 'English grammar in use supplementary exercises key pdf', which is likely a pretext to drive users to malicious links. The presence of multiple external URIs and the 'link farm' heuristic further support the phishing or malware distribution attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 5
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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 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://bologen.ru/award?keyword=english+grammar+in+use+supplementary+exercises+key+pdf PDF link annotation
- http://nevozepamuj.iblogger.org/57213532738.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4371247/normal_5ffa77f957165.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367617/normal_605136f68e88f.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4454056/normal_5fee399b83c2e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379363/normal_604c9fd2210e7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465690/normal_6009b2b1cfcc0.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4485823/normal_600825c7d64fc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408343/normal_601dca466f8b8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419198/normal_6050d9bd3789f.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4496165/normal_5fe3c48a9ba11.pdfIn PDF document text
- http://tigadugutuvatix.mygamesonline.org/13348754147.pdfIn PDF document text
- http://wifisef.medianewsonline.com/vocabulary_for_academic_ielts_writing_task_2.pdfIn PDF document text
- http://xiwupulo.medianewsonline.com/geometric_drawing_tutorial.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://uploads.strikinglycdn.com/files/4cd62a96-c0cc-4bb2-9de1-c31db5be1306/pofejex.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/967a8511-5b3f-4cd6-8295-5b54c6562c7d/4962221680.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/408532f6-5916-4adc-b51f-5dbddbee9732/why_is_my_moto_g5_not_charging.pdfIn PDF document text
- http://teluroluxeterez.myartsonline.com/foloda.pdfIn PDF document text
- http://kesolimasakifi.myartsonline.com/48668874154.pdfIn PDF document text
- https://s3.amazonaws.com/seriposuj/2974113530.pdfIn PDF document text
- http://joriboka.epizy.com/budget_bytes_sheet_pan_fajitas.pdfIn PDF document text
- https://s3.amazonaws.com/fokapikow/rixekesisor.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00013151.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13151 | 5532 bytes |
SHA-256: 85ff43353c222e224cc8e13ca8f9334cb3cc156297921dbda9e49fb614c0700d |
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font_01_sfnt_off000143fa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x143FA | 10880 bytes |
SHA-256: 051f73776d185e6a0e265f4566115657505d3e4cccc3e7d4e067e8073d1c5e1c |
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font_02_sfnt_off00016914.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16914 | 4324 bytes |
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176 |
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