MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing trojan. It contains a large number of external links, many pointing to disposable hosting, which is characteristic of a link farm used to drive traffic to malicious sites. The primary malicious URL identified is https://leonvi.ru/strik?utm_term=hillsborough+county+first+day+of+school.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://leonvi.ru/strik?utm_term=hillsborough+county+first+day+of+school PDF link annotation
- https://cdn-cms.f-static.net/uploads/4454045/normal_6053a7da59a6c.pdfIn PDF document text
- https://xetuvamabur.weebly.com/uploads/1/3/1/4/131409037/fcc186bfe4a6d.pdfIn PDF document text
- https://ruwatija.weebly.com/uploads/1/3/4/8/134846771/4021107.pdfIn PDF document text
- https://jipenudus.weebly.com/uploads/1/3/1/4/131406532/nesomixomab.pdfIn PDF document text
- http://robugipunebib.mygamesonline.org/the_fabric_of_the_cosmos_space_time.pdfIn PDF document text
- http://kafalukuwemi.mygamesonline.org/audio_driver_free_download_for_windows_7_32_bit.pdfIn PDF document text
- http://pedugubugof.mywebcommunity.org/certificate_of_conformity.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382193/normal_602fb901f1f16.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/6591aefc-5716-4c3c-93f3-2903706bba77/72796631647.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2dd363d0-3d3b-4e08-ac76-f50f8acb2c9f/pubelezipulimumolulep.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2b73c928-70cb-43c3-bd0b-01dc00517165/motorola_s11_hd_wireless_stereo_headphones.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5204637c-35a5-4763-84fc-3319d95fba5f/nikon_d40_price_new.pdfIn PDF document text
- https://26577e91-18e8-42c3-8e85-49dcca1d6605.filesusr.com/ugd/195787_7399880c05e642fb810ae9872c35c19f.pdf?index=trueIn PDF document text
- https://b3a1a1c9-4f8f-4fb8-b7cc-7339030cc889.filesusr.com/ugd/162fe6_70b88b41045745cd87b4fb7279a29b22.pdf?index=trueIn PDF document text
- http://xonolori.atwebpages.com/spectroscopy_application.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/113765c2-dbb3-476b-9d86-e5b9cb17a199/27769635123.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c2f5cf33-e6e6-409f-9d3a-0e9d481f17db/51962936424.pdfIn PDF document text
- http://jajogagek.atwebpages.com/what_are_the_steps_of_lean_six_sigma.pdfIn PDF document text
- https://8b8c7005-3af0-45a1-8e5b-a6902caa9335.filesusr.com/ugd/dbd7d9_ba6553b9913f4d2a87163de68f8b0bb5.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_off0000f0ed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0ED | 5484 bytes |
SHA-256: 6942ff6ef408c314f70893e2076d2b2a3c5c1f64d46f84e9042cae7ee174e503 |
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font_01_sfnt_off00010391.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10391 | 10916 bytes |
SHA-256: df2e533302eaa3e055f11d2b326a7884737fb74ac629b7832a84994ab35620e5 |
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