MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document exhibits characteristics of a callback phishing scam, as indicated by the 'SE_CALLBACK_LURE' heuristic. It contains multiple external URIs, including one pointing to 'jacksth.ru', which is likely part of the lure. The ML classifier and ClamAV detection strongly suggest malicious intent, classifying it as a phishing trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://jacksth.ru/wix?keyword=where+is+the+next+twitchcon+2020 PDF link annotation
- https://pudasebedizut.weebly.com/uploads/1/3/4/5/134587980/zatiludevebe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454047/normal_600b4e6ecddfd.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4392659/normal_6016a8b4ac61d.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4401546/normal_5ff652b63ec64.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4384150/normal_60028b10ca4b9.pdfIn PDF document text
- https://jodisugej.weebly.com/uploads/1/3/4/7/134732418/weketop_rogugodogoriw.pdfIn PDF document text
- https://dowadumusisek.weebly.com/uploads/1/3/4/5/134521262/7c593.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4427103/normal_60054648cde54.pdfIn PDF document text
- https://pulufakifene.weebly.com/uploads/1/3/3/9/133999255/futoxa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4503874/normal_600e45ca9ac15.pdfIn PDF document text
- http://vipadobotisituz.mygamesonline.org/catalogue_sacem.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416935/normal_5fd787259921a.pdfIn PDF document text
- http://tujidal.mypressonline.com/lazorazuzomazegirekofi.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4413454/normal_5ffacb3764147.pdfIn PDF document text
- http://tonedomopoja.scienceontheweb.net/76330200317.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fiforeru.atwebpages.com/tin_tin_dog_star_from_old_movies.pdfIn PDF document text
- https://662517ce-f374-4037-aebd-99b1dbe00103.filesusr.com/ugd/0c4177_20974014226f43688489d480d0c3f90d.pdf?index=trueIn PDF document text
- https://4dcfe184-cd6c-48f8-9f23-5461c743a1d4.filesusr.com/ugd/cc8533_2c78fd321bf74ff582ce118a091fca50.pdf?index=trueIn PDF document text
- https://5c71d6b4-13b5-43a2-97a4-9a0eba4d0f4d.filesusr.com/ugd/0f1814_fd6862fa6b0a43ee85ff3d8e3d95369d.pdf?index=trueIn PDF document text
- https://b133b025-67d1-4190-9e53-fbb99503dec2.filesusr.com/ugd/caf13f_071a3b06e08b45dea9a59695fa97d85a.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/d863ec18-805a-43a7-8e71-5d9a70393715/gukodemidisuwaj.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/498a333b-ba02-4677-883b-2676623b9bc6/one_of_us_is_lying_book_cover.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_off0000ed04.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED04 | 5092 bytes |
SHA-256: c1f7597f27183c8a35afef9dfb2b8dff5342609e97f8d9818ee2e0dae7ffe16a |
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font_01_sfnt_off0000fe7b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE7B | 11824 bytes |
SHA-256: f9fac8df5740cde7783c902f7465626d2bedc3933f95a868d0fc03824fccd18f |
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