MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains malformed streams and multiple external URIs, indicating malicious intent. The ML classifier and ClamAV detection strongly suggest this is a phishing or trojan delivery mechanism. The presence of numerous links, including one pointing to 'vilenefex.ru', suggests an attempt to direct users to malicious content or download further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9989
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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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/strik?utm_term=how+to+adjust+aeron PDF link annotation
- https://static.s123-cdn-static.com/uploads/4530151/normal_5ff273a7805cf.pdfIn PDF document text
- http://gijipodotetojo.22web.org/kesarafefedavufulitome.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408177/normal_601efca03d947.pdfIn PDF document text
- http://kafalukuwemi.mygamesonline.org/xepodurero.pdfIn PDF document text
- http://lukanovetefitef.22web.org/sisaz.pdfIn PDF document text
- http://baliferifopiz.mypressonline.com/58476987151.pdfIn PDF document text
- http://dexiserabasavo.mygamesonline.org/41485180461.pdfIn PDF document text
- http://wupunekum.getenjoyment.net/4236412024.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4455179/normal_5fec7dbc46131.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383327/normal_60677354a7703.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454161/normal_60465d5c77d5d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4490140/normal_60476edbad15b.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.opentle.orgIn PDF document text
- http://tatasuvuputo.epizy.com/app_store_free_games_for_ipad.pdfIn PDF document text
- http://rupilozomu.epizy.com/left_hand_arpeggios_piano.pdfIn PDF document text
- http://ximuxulizi.myartsonline.com/bacterial_and_bacteriophage_genetics.pdfIn PDF document text
- http://zigejobo.epizy.com/38811756619.pdfIn PDF document text
- http://ketaxesam.epizy.com/fuvunusugolujomojef.pdfIn PDF document text
- http://merekum.rf.gd/esl_maths_worksheets_free_printables.pdfIn PDF document text
- http://gijivofasov.rf.gd/united_states_army_special_forces_insignia.pdfIn PDF document text
- http://zamutuxagen.epizy.com/bible_gateway_nlt_verse_of_the_day.pdfIn PDF document text
- http://tivakifuzir.atwebpages.com/how_do_you_reset_the_service_engine_soon_light_on_a_2004_buick_century.pdfIn PDF document text
- http://nobuxuka.epizy.com/61802587482.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
- http://www.gnu.org/licenses/gpl.htmlIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00011943.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11943 | 4916 bytes |
SHA-256: eb5e0e63659997ca4f7cf6daa4446b374149e65e78a3e1f2ae7fc03c0821065e |
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font_01_sfnt_off00012a0c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A0C | 9964 bytes |
SHA-256: 3ee249ba0c8e5385958c6003e45728825f34f33db4429974b84b8b5b7bad4d41 |
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font_02_sfnt_off00014628.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14628 | 15080 bytes |
SHA-256: 7db481ac38c9243f58e3f08f3aeaafe5bdc0d2a324108b218dd2b8ae27c8512f |
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font_03_sfnt_off00017713.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17713 | 16572 bytes |
SHA-256: 89b965814df1d55339d3ba35191ae03b6dd12d446f2c5bdeb54111f7b4155ecd |
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