MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous external links, with one prominent link pointing to 'jacksth.ru'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm for SEO manipulation or malicious redirection. The presence of a download button lure and callback phishing lure further supports a malicious intent. ClamAV also detected this file as 'Pdf.Phishing.Trojan'.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 7
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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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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=yamaha+receiver+rx-v677+owners+manual PDF link annotation
- http://rowowesofazov.medianewsonline.com/81047547138.pdfIn PDF document text
- http://leqqurint.online/racing_limits_apk1nd2r.pdfIn PDF document text
- http://rasudilikid.mywebcommunity.org/zofifisewuxejigugusojupa.pdfIn PDF document text
- http://itrom.fun/fono_ingilizce_gramer_kitabmueua.pdfIn PDF document text
- http://yoganchik.space/kvs_admission_6_class_2019_online9kul4.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4375522/normal_5ffe05a3a27ab.pdfIn PDF document text
- http://nitesufi.sportsontheweb.net/the_land_of_stories_book_2_audiobook_free.pdfIn PDF document text
- http://zizodoroluxonaf.sportsontheweb.net/29819783566.pdfIn PDF document text
- https://xasigusuvenazuj.weebly.com/uploads/1/3/0/7/130739755/29fed05.pdfIn PDF document text
- http://xorabawik.medianewsonline.com/mopamomojogepinabolor.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/wefadep/livro_antes_de_partir_gratis.pdfIn PDF document text
- https://s3.amazonaws.com/wakuzidi/25358519072.pdfIn PDF document text
- https://s3.amazonaws.com/pazovugal/lyrics_of_7years_old_by_lukas_graham.pdfIn PDF document text
- https://s3.amazonaws.com/feliso/world_of_warcraft_classic_warlock_guide.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_off0001472c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1472C | 5484 bytes |
SHA-256: ecd7aeaa60620c7e44b9c3b99c7eafe09676d78a9b8ec5b558f60ac7699a64ee |
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font_01_sfnt_off000159d4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x159D4 | 11460 bytes |
SHA-256: 18ceeafbc9834915a13fd8e723221c5beebd70867710046ab63ed6ab04cffedf |
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