MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains multiple heuristics indicating malicious intent, including ML classification and ClamAV detection. It presents lures for payment redirection and callback phishing, suggesting a scam or phishing attempt. The embedded URL `https://jacksth.ru/strik?utm_term=how+to+notify+usps+of+name+change` likely leads to a malicious site designed to steal user information or deliver a payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LUREDocument describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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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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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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=how+to+notify+usps+of+name+change PDF link annotation
- https://static.s123-cdn-static.com/uploads/4455178/normal_5ffa044262f73.pdfIn PDF document text
- http://smm-target.ru/rezunuwupawubagubowopokipjr6z4.pdfIn PDF document text
- http://pitushok.space/albuterol_hfa_davis740on.pdfIn PDF document text
- http://biomanua.website/escudo_de_la_bandera_de_costa_rica_actual7gu0h.pdfIn PDF document text
- https://cdn.sqhk.co/nozedimasav/xRhIYig/xejemavizuzukedetowur.pdfIn PDF document text
- https://cdn.sqhk.co/segenoliz/Mhbvjai/79970050222.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4402938/normal_6034d5d663f5d.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4469358/normal_6005da15a103c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4391335/normal_6031de321890c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4464529/normal_6031e97026da3.pdfIn PDF document text
- https://cdn.sqhk.co/sevimifogu/ESMJjf7/10433544954.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4374021/normal_5fe49720971dd.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4463526/normal_6001f970b201f.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://1c92f6d8-19eb-429c-9239-1cf6be91372f.filesusr.com/ugd/cc1a03_12db57f3e4a9466d9201a5b28fbfeae9.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/tubukeganuji/abhishek_upmanyu_videos.pdfIn PDF document text
- https://s3.amazonaws.com/befafuni/westpac_fiji_exchange_rate_sheet.pdfIn PDF document text
- https://b24182fa-1fee-416c-9f57-41d8a36573e1.filesusr.com/ugd/1cc367_0374109591894bfcbaa66543fd76812d.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/vetamedisoz/hp_4500_envy_cartridge.pdfIn PDF document text
- https://91c7bc9f-df77-4dbd-ae51-8bcf521f3e61.filesusr.com/ugd/1df9ea_edaf599a62b84661bf3c44146d4554db.pdf?index=trueIn PDF document text
- https://6bc553e5-d0de-4278-827a-c77c8eb32fbd.filesusr.com/ugd/4a6c57_f9dcf315b394454a9edb7a97131eeb5e.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/fedufiporara/xawapigipexemawelanu.pdfIn PDF document text
- https://0feddc0e-03bc-46a3-a741-45303deff239.filesusr.com/ugd/6ea6a2_7448397180f34b3aa1e47ec0360450b8.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ea1c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA1C | 5456 bytes |
SHA-256: 8b14fc27c11ee613ffd61cf49279765b3c934a279d662115de3f0aacd5a0f3c8 |
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font_01_sfnt_off0000fcaa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFCAA | 10716 bytes |
SHA-256: 936a0f4f76da47f187b4f09c6e29f41e3b94f70fe907415e516450938461362f |
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