MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a significant number of external links, many pointing to S3 buckets, which is characteristic of SEO link farm abuse. One of the primary external links, https://jacksth.ru/strik, is suspicious and likely leads to a malicious site. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan. The presence of embedded URLs and the overall structure suggest an attempt to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 5
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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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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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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/strik?utm_term=why+atp+is+a+high+energy+structure
- http://lg-copyrightforms.com/effective_speech_and_oral_communicationr7sm8.pdf
- https://xuvakaxatal.weebly.com/uploads/1/3/1/0/131070170/manubijibifonex.pdf
- http://flipping-car.online/stickman_warriors_shadow_fight_mod_apkefrlw.pdf
- http://detonic-romania.website/trap_drum_pads_guru_apkpureahs2s.pdf
- http://lishop.site/nozekivanarinadql7b.pdf
- http://damvglaz2.xyz/anatomy_of_the_constitution_preamble_activity_answersm27u4.pdf
- http://brettlockhart.com/datojepl7hpa.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/kelageketisefuv/fuwagob.pdf
- https://s3.amazonaws.com/bezutu/abacus_maths_year_5_answers.pdf
- https://s3.amazonaws.com/satulibaren/wopinurugepomuvafaxovi.pdf
- https://s3.amazonaws.com/vesubodufisi/34083258565.pdf
- https://s3.amazonaws.com/widiku/98357862963.pdf
- https://s3.amazonaws.com/kobivimelelo/82486379074.pdf
- https://s3.amazonaws.com/numegubowalonan/eicar_test_files.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e326.bina2e577f853ac19bf575fd12373297c20ee74b69baa4484a0c2147d7c8e1d7344 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE326 | 5280 bytes |
font_01_sfnt_off0000f52f.bina5871c2b80203e16ec4eb578fd58cdf99f91b021e549e1e9c3bcf0149a304831 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF52F | 11020 bytes |
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