MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating it is a phishing or trojan delivery mechanism. The document body, though heavily obfuscated, combined with heuristic firings like 'SE_BROWSER_INSTALL_LURE' and numerous external URLs, suggests a social engineering attack. The primary goal appears to be tricking the user into downloading and executing a malicious payload disguised as a browser update or extension.
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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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://pistant.ru/uplcv?utm_term=dioscorides+de+materia+medica+english+pdf PDF link annotation
- https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/dvq5e36vma59htk6pmq4peqdg2/13636102994.pdfIn PDF document text
- http://outspokenholland.com/userfiles/fckFile/20210531050936.pdfIn PDF document text
- https://alexandrapanayotou.com/web/images/static/file/kotibanititowikilil.pdfIn PDF document text
- http://chinocorporatechallenge.com/clients/6216/File/36752854276.pdfIn PDF document text
- https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/088593b460eb2e82dffa7a28f03a9b14/jaxokekenixelavu.pdfIn PDF document text
- https://eastmanllc.net/ckfinder/userfiles/files/kimolurokuzixasetuja.pdfIn PDF document text
- http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd955794a9---kegikizedoz.pdfIn PDF document text
- http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cff09434e0c---razewizakowafoxiva.pdfIn PDF document text
- https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/bam7pt1mp12hgc3cs6u4sk659q/lowovuk.pdfIn PDF document text
- https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160940780de583---tokoni.pdfIn PDF document text
- https://sinarwaja.com/account/files/80515253115.pdfIn PDF document text
- https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/m9rcocsisrjh4n3san019a4kc3/39812891443.pdfIn PDF document text
- https://www.temsilcifirsatlari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c656878207---viramagufejus.pdfIn PDF document text
- https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160868fbfcfa2c---81737869930.pdfIn PDF document text
- https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/bcff00b48a8a47593db4383e7d9856b7/20946080078.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off0001229b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1229B | 5568 bytes |
SHA-256: 9b7e39a40ba1979e4adc98dae2cf723cb29c7503d191d38ec8724222e33177bb |
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font_01_sfnt_off00013561.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13561 | 14488 bytes |
SHA-256: 56f557495396c1cb0361537c942b095f681ce3a01dd78a20f50f11d658a98e04 |
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