MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains malformed streams and a high ML score, indicating malicious intent. It also hosts a link farm pointing to compromised CMS upload storage, suggesting it's part of a phishing or malware distribution campaign. The presence of embedded URLs and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly support this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9840
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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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 http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/idp5bl6t2udrauibm29d2342b2/47909905835.pdf In PDF document text
- http://strandedtattoo.net/file/94320578764.pdfIn PDF document text
- http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160817ee22fc8c---41666697795.pdfIn PDF document text
- https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607c79c191239---62612525681.pdfIn PDF document text
- http://princeworldwide.com/multimedia/userfiles/file/40172413063.pdfIn PDF document text
- https://celebicatering.com/upload/ckfinder/files/73857575374.pdfIn PDF document text
- http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070eb3a2df17---44108725805.pdfIn PDF document text
- https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/uptj1vo4p6c6uqur8ko5mg8fpc/48816520161.pdfIn PDF document text
- http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160746fde5573a---ladiwejakonoraxirawo.pdfIn PDF document text
- http://dianacb.cz/userfiles/file/88505969397.pdfIn PDF document text
- http://glcore.net/ckfinder/userfiles/files/bobotonotaf.pdfIn PDF document text
- https://99shayari.in/userfiles/files/46717232380.pdfIn PDF document text
- https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/5ede6e9e95a85b3de8a56e9cb4ad5511/rasozepavajekajazi.pdfIn PDF document text
- https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607ce1e9dc785---zonapupok.pdfIn PDF document text
- http://planetamama.ru/files/file/8301154056.pdfIn PDF document text
- http://ipost.mn/ckfinder/userfiles/files/84898043879.pdfIn PDF document text
- https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/675e37ab23fef5bd7afc8be3e2a5e850/72146805469.pdfIn PDF document text
- https://thewaves.net/wp-content/plugins/super-forms/uploads/php/files/p4srn6s3ugn69e7hpkbhjseqs6/21866405012.pdfIn PDF document text
- http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d86884e70c---mexudepamekolovonidu.pdfIn PDF document text
- https://ms02bet.com/contents//files/5788886580.pdfIn PDF document text
- https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/160968ec04d70d---gejumava.pdfIn PDF document text
- https://uppersanduskyrotary.com/cms/files/File/getobexorajitifimenetidun.pdfIn PDF document text
- https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/a91hjos69ndfl9hiptna7abdte/monofuxajeler.pdfIn PDF document text
- https://digidatadecolombia.com/wp-content/plugins/super-forms/uploads/php/files/7a3f795fe8db4ac33db6f7299f753c62/wiwutapag.pdfIn PDF document text
- https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c63604aca0f---pefosikogufoniwonebivovo.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=500+science+general+knowledge+question+answer+in+english+pdfPDF link annotation
- 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 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000deb4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDEB4 | 18636 bytes |
SHA-256: 4b06d4322322f0d30045c1baad14a37ea691dfff3ddf4758b7d01260459da71b |
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font_01_sfnt_off00010fd6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10FD6 | 11480 bytes |
SHA-256: 1e6e705c761109d8ea422797ad2932c0ada840050bf1c631c72a2120093054d8 |
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font_02_sfnt_off00012a80.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A80 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_03_sfnt_off0001428d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1428D | 2072 bytes |
SHA-256: 9270c78409322556cf0db98cb470a69e85ad3f0822cc4813eee77524ef487306 |
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font_04_sfnt_off00014c0a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14C0A | 16612 bytes |
SHA-256: 558fd73ec6a15d9a4e7f96f924154239f800c7978ad0af289e0c217ad257a64f |
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