MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The file is a PDF document detected as malicious by ClamAV and an ML classifier. It contains multiple embedded URLs, one of which, 'https://leonvi.ru/strik?utm_term=how+to+work+out+how+many+calories+in+food', is directly referenced by a PDF_URI heuristic. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is part of a link farm on disposable hosting, suggesting a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the nature of the heuristics and the embedded URLs strongly suggest an attempt to redirect the user to a malicious site, likely for phishing or to download further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 5
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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 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=how+to+work+out+how+many+calories+in+food PDF link annotation
- https://static.s123-cdn-static.com/uploads/4376380/normal_5fe00e82c2264.pdfIn PDF document text
- https://cdn.sqhk.co/wujamufaw/4jdXhf9/53838364573.pdfIn PDF document text
- https://pawajapik.weebly.com/uploads/1/3/0/8/130813804/gapuge-lumolut.pdfIn PDF document text
- https://cdn.sqhk.co/lowanivari/bgeihXh/passive_voice_in_english_and_arabic.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4483608/normal_6004f33c3b974.pdfIn PDF document text
- https://cdn.sqhk.co/rularijulen/vkTdgcG/affirmative_action_policy_pros_and_cons.pdfIn PDF document text
- https://baduninenivogov.weebly.com/uploads/1/3/4/5/134589003/9389316.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4455645/normal_606b4a164363e.pdfIn PDF document text
- https://cdn.sqhk.co/kixowijeka/FdLATig/pimififujav.pdfIn PDF document text
- https://cdn.sqhk.co/girolivudafo/2iiHIqZ/warfighter_exercise_19-_4.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/c52a6883-9dbe-4cd6-8041-c30347b77a5f/stewart_calculus_concepts_and_contexts_4th_edition_solutions.pdfIn PDF document text
- https://0fc0baf9-b884-4fcd-968e-f93c0f938930.filesusr.com/ugd/68ec51_71601ce37cd24cc1b507f21477f9b5be.pdf?index=trueIn PDF document text
- https://62abf401-5fc9-4991-ac00-cb6a0c8cf8ec.filesusr.com/ugd/e4ff69_fc49d4d9e59b43d2afeebcbad030d7ce.pdf?index=trueIn PDF document text
- https://6cdb29d4-22ce-4aaf-9e51-562b59d50851.filesusr.com/ugd/1b20fb_38e0f0aee8d244a29fd57a6feb053567.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/61cade72-2f07-4b40-b98f-9ca9d242f05a/what_is_a_metaphor_for_school.pdfIn PDF document text
- http://vobatize.epizy.com/ancient_magus_bride_elias_plush.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ca0202fc-3f57-497c-aee0-c3b367ee413d/frigidaire_portable_retro_9-can_mini_fridge_red.pdfIn PDF document text
- http://tufeloxe.rf.gd/kanewefutaxevuwupadutesiv.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fd5a78e9-e4a3-41a6-8ff0-f380ddf03971/33238916424.pdfIn PDF document text
- https://bf808793-8b46-4c54-8b11-319763181fa0.filesusr.com/ugd/0d018b_bc5009d16a974057b58825d0056b44ad.pdf?index=trueIn PDF document text
- http://larazegabolulaf.epizy.com/82382716138.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3ce648ae-6d18-4ba9-8dda-4426487c489f/zukudafiwurulogatuxuki.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_off0000ec80.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC80 | 5480 bytes |
SHA-256: 5f6edcf66e134cf9066935a64c179078fe844c71923cd7357f302cb7c91af26a |
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font_01_sfnt_off0000ff08.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF08 | 10652 bytes |
SHA-256: 97b84031dd1f43168bd2c9ab91f8dcd32ee4c2e97175ef4e9044ecb710f8cac2 |
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