MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, specifically flagged as a phishing trojan. It employs a link farm and SEO redirector strategy, embedding numerous external links, with a primary redirector pointing to 'https://jumiwimov.ru/strik?utm_term=visual+studio+2013+c%2523+tutorial+for+beginners'. The document body, though heavily obfuscated, suggests a lure related to 'Visual Studio 2013' tutorials, indicating a phishing attempt to trick users into downloading further malicious content. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest exploitation for client execution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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 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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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://jumiwimov.ru/strik?utm_term=visual+studio+2013+c%2523+tutorial+for+beginners PDF link annotation
- https://static.s123-cdn-static.com/uploads/4385014/normal_5fec048b90c0f.pdfIn PDF document text
- http://axecheat8.xyz/85191698333dzx8o.pdfIn PDF document text
- http://about-central.com/75313527200lulb7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369333/normal_6024c48d47398.pdfIn PDF document text
- http://copyrighthelpcentral.com/what_is_another_word_for_stormyb4xsv.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374847/normal_60305808d1417.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4464315/normal_606e64162e421.pdfIn PDF document text
- http://zdorovie-vashe-vse.xyz/honeywell_focuspro_6000_reseta7q6a.pdfIn PDF document text
- http://richteam.site/3d_puzzle_harry_potter_castle_costco1e1qg.pdfIn PDF document text
- http://net-klientov.ru/vaviluzatozenipepadakow8333.pdfIn PDF document text
- http://vorecan.space/puxoguwosadig162yo.pdfIn PDF document text
- http://helpverifybadges.com/retobina25gs8.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4424036/normal_5fefaadc5d951.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://s3.amazonaws.com/bizamesuwepe/zusogakajamujupukoj.pdfIn PDF document text
- https://s3.amazonaws.com/wovugi/24905781966.pdfIn PDF document text
- https://s3.amazonaws.com/genedonapubefe/wuthering_heights_questions_and_answers.pdfIn PDF document text
- https://s3.amazonaws.com/jufowokedunod/24373847146.pdfIn PDF document text
- https://684917c6-b594-4497-9ea4-141105166a5b.filesusr.com/ugd/0dc9f5_59f570afb70e4b78b7f994db467272b0.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/loxopudizus/18004147919.pdfIn PDF document text
- https://ec451167-49e0-489e-a150-d7dc0ecf9264.filesusr.com/ugd/fe0276_f0961a20bc2b4ad6bfa994cf990a7c91.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000cfe6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFE6 | 4952 bytes |
SHA-256: be5207c3dd57f14b14f55121f271a884796bf98aaa637030a2fee46421347a80 |
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font_01_sfnt_off0000e0ba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0BA | 13076 bytes |
SHA-256: 3388faa46d89c2bc3ff5604a497b1ef4f2b84de8678e46caa5f432e4d0f39558 |
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font_02_sfnt_off0001097c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1097C | 4324 bytes |
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e |
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