MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF document flagged by multiple heuristics, including ML classification and ClamAV, as malicious phishing content. The 'SE_CALLBACK_LURE' heuristic indicates the document likely prompts the user to call a phone number, a common tactic in tech-support scams or callback phishing. Although no scripts were explicitly extracted, the presence of numerous external URLs suggests a potential for downloading further payloads or redirecting users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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 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://allytemp.ru/uplcv?utm_term=a+blog+is PDF link annotation
- http://kachelofen-prommegger.at/7046047461.pdfIn PDF document text
- http://tieulongcopro.com/luutru/files/pepel.pdfIn PDF document text
- http://winhazel.com/indigo/ckfinder/userfiles/files/83863540955.pdfIn PDF document text
- https://kiofruits.com/admin/uploads/files/rubabon.pdfIn PDF document text
- http://jolanyee.com/upload/files/202109160517527897.pdfIn PDF document text
- https://holycrosshealthcare.com/userfiles/files/65482743096.pdfIn PDF document text
- http://sinocelltech.com/filespath/files/20210904010329.pdfIn PDF document text
- http://huijingweb.com/upload_fck/file/2021-9-16/20210916100827513231.pdfIn PDF document text
- https://ispartaorganizasyon.com/ckfinder/upload/files/todedujirub.pdfIn PDF document text
- http://dochoiotovn.com/uploads/userfiles/file/reronud.pdfIn PDF document text
- http://dawahcity.com/userfiles/file/45138602047.pdfIn PDF document text
- http://www.yankey.com.tw/demo/public/editor/ckfinder/upload/user_upload/files/48644390138.pdfIn PDF document text
- http://sziszolg.hu/editor_up/tedegokibuwupobadabup.pdfIn PDF document text
- http://nomayaku.com/userfiles/file/35407612019.pdfIn PDF document text
- https://dongphuchuytai.com/upload/files/mejelomonademibivavasa.pdfIn PDF document text
- http://softtox.com/new/userfiles/file/42161901443.pdfIn PDF document text
- https://ecableapp.com/FCKeditor/FCKimgUpload/file/71504357279.pdfIn PDF document text
- https://haltia.mx/sii/ckfinder/userfiles/files/72358244289.pdfIn PDF document text
- http://bradzo-ep.com/uploads/files/jevufofalafatusubo.pdfIn PDF document text
- https://hr-serdahel.hu/images/file/zinoveko.pdfIn PDF document text
- http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141490caa811---sererarig.pdfIn PDF document text
- http://thucphamchucnangmy.vn/uploads/files/repipuzesubo.pdfIn PDF document text
- https://birutelorasin.com/contents/files/zonivex.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b89c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB89C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d0b2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD0B2 | 9808 bytes |
SHA-256: b3ad6e4b6eca64efb03487c2fef7b7ba84b0f2b73cc3bf3d48595fafe69b1678 |
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font_02_sfnt_off0000e63d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE63D | 16472 bytes |
SHA-256: 6c8cb28755265e9d3260407bc3ce9f965c54fd73ea130ccce8c15c01b25ab739 |
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