MALICIOUS
144
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The sample is a PDF file flagged by ML classifiers and ClamAV as malicious. It contains an external URI pointing to 'wastran.ru', which is likely part of a phishing or malware distribution scheme. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may be instructing the user to open a password-protected archive, a common tactic to bypass security gateways. While no scripts were explicitly extracted, the PDF format can embed JavaScript, which could be used to facilitate the download.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://wastran.ru/pbw?utm_term=introduction+to+automata+theory+languages+and+computation+pdf PDF link annotation
- https://static.s123-cdn-static.com/uploads/4493597/normal_5fc6ff1b06f29.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388041/normal_605df52848409.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4418788/normal_5fd7df95af037.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387589/normal_6027b25e92785.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4506063/normal_601f31c200f0d.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4469349/normal_60b3ea88ccac1.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4446923/normal_5fff41a5c60cb.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4492897/normal_5ff8472dd4381.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4404969/normal_60b8717186deb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366032/normal_604661dee57a4.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4502920/normal_6006bc9008c01.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366984/normal_5fdb1ae0b506b.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/ca3f1cd5-53e6-40eb-ab4e-ac4a1b4710a1/34243673999.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/96c6f4d4-9d88-4e04-9363-20935ff95532/94024427573.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a29d0043-4275-41ef-9d05-25cc9c551694/samsung_rf261beaesr_freezer_door_handle.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/81e7c589-00f8-4b8b-a1e4-9a38d570211d/how_to_calculate_hike_percentage_in_excel.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f99e3783-5203-4eed-a497-1c2f11a12bc9/xudevobujavepozowovifarum.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cf4002d4-6041-4948-920f-47ddab94412c/60622710729.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dc0b0d03-e600-4229-aace-fb272b10d631/92276546151.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fe8bf96e-f769-458a-9f05-4b5d6884b73a/home_network_connection_windows_10.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fd106a85-c92c-4af9-9212-0dcda390ebfd/84136978011.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f264.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF264 | 5488 bytes |
SHA-256: 6b42352828ef5cc2967c7debf207b730ffe61306271d00f692d55c86fb66739e |
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font_01_sfnt_off000104e4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x104E4 | 1800 bytes |
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620 |
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font_02_sfnt_off00010d71.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D71 | 11148 bytes |
SHA-256: a2a99289a7ed7849e56fe81b0a85ded56758bed096764da0408c450f9bb9397a |
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font_03_sfnt_off00013335.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13335 | 4324 bytes |
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71 |
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