MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous external links, with a critical heuristic firing for a 'PDF_SEO_LINK_FARM'. The primary URL, 'https://vilenefex.ru/award?keyword=guitar+chords+book+pdf', suggests a lure related to guitar chords, but the overall structure indicates a malicious intent to redirect users. ClamAV detection and ML classification further support its malicious nature, likely as a phishing or trojan delivery mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9812
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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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://vilenefex.ru/award?keyword=guitar+chords+book+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4419827/normal_604e3860d9f24.pdfIn PDF document text
- https://ramowukegi.weebly.com/uploads/1/3/4/5/134508735/tubetaxow_sukefedawizesop_duroluvekuzolav.pdfIn PDF document text
- https://zezogilak.weebly.com/uploads/1/3/0/8/130874046/figufopejodule.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4477409/normal_5ff1272512803.pdfIn PDF document text
- http://mantenancie.com/vunoximerefenoruwegrsp15.pdfIn PDF document text
- http://top-agent.ru/excel_drop_down_list_to_filter_worksheethnngt.pdfIn PDF document text
- http://50offshop.info/4404016668ek8v1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419849/normal_6041ea6a7a8a1.pdfIn PDF document text
- https://wobanuwu.weebly.com/uploads/1/3/5/9/135959505/radixebozuxokevese.pdfIn PDF document text
- https://vaxudiku.weebly.com/uploads/1/3/4/7/134709892/webizod.pdfIn PDF document text
- http://e-devletturkiyeaidatsistemimgovtr.com/what_stretches_to_do_before_lifting_weightsto2fa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479679/normal_6014d7c4da076.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4393208/normal_5ff0626c4e172.pdfIn PDF document text
- https://durosokikiw.weebly.com/uploads/1/3/1/3/131379956/96668.pdfIn PDF document text
- https://vukibipodut.weebly.com/uploads/1/3/4/6/134690361/df21440c5.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://5902ff30-e651-486c-ac37-3e8383bfa78f.filesusr.com/ugd/f35da0_16481fe520ab484b88ce0524bc43029d.pdf?index=trueIn PDF document text
- https://80f75f89-a1e3-4611-a0ef-7a704eb82da9.filesusr.com/ugd/0286dd_8227f52637624185bf569aa0eba57f07.pdf?index=trueIn PDF document text
- https://c941d99d-b58b-4215-81ce-525e38db2b81.filesusr.com/ugd/2dc4cf_e70c64144f90404babadba454db926cd.pdf?index=trueIn PDF document text
- https://d70b1dc8-7d09-4148-9854-e6a7cae1b87b.filesusr.com/ugd/5899d5_509ae16500484c84acb8559e2b311350.pdf?index=trueIn PDF document text
- https://438c9214-13ba-44a2-8469-a4c97ff43377.filesusr.com/ugd/5d46a0_e939775d130647c6be885126588a4954.pdf?index=trueIn PDF document text
- https://52aa71f3-9574-4e96-898b-bb16aa893b2c.filesusr.com/ugd/b13a71_9c61a9c278664087ab553486e9360ab7.pdf?index=trueIn PDF document text
- https://a581e706-3bf6-41fb-8978-ad4d4077590d.filesusr.com/ugd/afbe6b_c8cc255c9c704d37ad73ed527f935a99.pdf?index=trueIn PDF document text
- https://484a0fbd-04e0-416f-b335-41eb3f66808b.filesusr.com/ugd/228afb_47dc57aaf8ab4c5c9f98b25b37acd905.pdf?index=trueIn 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_off00010508.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10508 | 5448 bytes |
SHA-256: 2c56e13fbbcfc1a20480f09a35aa0aadaac561b3f80e48593f8593a3521cd0f6 |
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font_01_sfnt_off00011781.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11781 | 10656 bytes |
SHA-256: 6101c8fa18a7a1bc0afd3b30a68dbff9e359170e1911df0299c47acf0f8fe00b |
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