MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Numerous heuristics point to the PDF acting as a link farm, directing users to compromised websites and potentially disposable hosting. The embedded URLs, such as https://laborke.ru/uplcv?utm_term=how+do+you+unlock+an+iphone, suggest a phishing or social engineering lure, likely to trick users into further compromise.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
Heuristics 6
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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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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://laborke.ru/uplcv?utm_term=how+do+you+unlock+an+iphone PDF link annotation
- http://sterenstein.ru/userfiles/file/58552925664.pdfIn PDF document text
- https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/db75f53cc4d6547c1186609ada38f3f9/nunejokaxajewetizipugi.pdfIn PDF document text
- http://fishingas.com/userfiles/file/suzuluwasiloser.pdfIn PDF document text
- http://world-spa-resorts.com/dok/guzex.pdfIn PDF document text
- http://salwex.hu/file/xipirinurupavi.pdfIn PDF document text
- http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1613755e1e3614---fupixejumotunikuzafevimib.pdfIn PDF document text
- http://creatinglifeoptions.com/userfiles/files/bozupewisiwesezas.pdfIn PDF document text
- https://incoyun.com/calisma2/files/uploads/64188314746.pdfIn PDF document text
- https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/uib790utq07lnrbl4q8o4i79qf/68831487124.pdfIn PDF document text
- http://marymo.ru/uploads/files/8122148598.pdfIn PDF document text
- https://euroroma-bg.org/files/file/85587374671.pdfIn PDF document text
- https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/161335e5d54064---49778812468.pdfIn PDF document text
- http://speckrepej.com/upload/file/vakulasuratubavop.pdfIn PDF document text
- https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/cdde46aff1db006e4c814795f8c5e5d8/99781774264.pdfIn PDF document text
- http://guojingmall.com/userfiles/file///49350338382.pdfIn PDF document text
- http://stmarysharipad.com/userfiles/file/46451034561.pdfIn PDF document text
- https://paeonia.ch/userfiles/files/6923223682.pdfIn PDF document text
- http://iphonedown.com/ckfinder/userfiles/files/kalezikape.pdfIn PDF document text
- http://www.kickcommerce.com/userfiles/file/42227560477.pdfIn PDF document text
- https://bouveau-consulting.com/userfiles/file/supofi.pdfIn PDF document text
- https://preciseenergygroup.com/media/47565935799.pdfIn PDF document text
- http://ateliergermain.org/sites/default/files/file/82942729397.pdfIn PDF document text
- https://coopinproject.eu/ckfinder/userfiles/files/zujitis.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_off0000b2be.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB2BE | 14880 bytes |
SHA-256: 70b189546d763f5f1dbd7efb512266448c06bfb6032f140379d977115a4b19d8 |
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font_01_sfnt_off0000d813.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD813 | 10628 bytes |
SHA-256: b16cf28589aa04d83d36a0d962c5569901f874fbbe7cdf2e9ec67247ff030451 |
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font_02_sfnt_off0000f050.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF050 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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