MALICIOUS
256
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged by multiple heuristics and ClamAV as malicious, specifically as a phishing or trojan delivery mechanism. The critical heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document's content likely attempts to solicit sensitive recovery information from the user. The presence of numerous URLs, many pointing to compromised or disposable hosting, suggests a link farm designed to redirect users to malicious sites or download further payloads. No scripts were extracted, but the overall structure and heuristic firings strongly suggest a phishing or credential harvesting attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9921
Heuristics 8
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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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Recovery secret / private key request critical SE_SECRET_RECOVERY_LUREDocument requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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://k-newsletter.com/ckupload/files/koruni.pdf In PDF document text
- http://nextgenship.net/upload/file/20210518162136936946.pdfIn PDF document text
- http://sneedfamilyct.com/clients/44919/File/60749974348.pdfIn PDF document text
- http://coinproject.com/userfiles/image/file/71530765020.pdfIn PDF document text
- https://cemb.ca/upload/editor/file/41181879523.pdfIn PDF document text
- http://alexanderkanevskyartgallery.com/clientMedia/file/vaxafotobava.pdfIn PDF document text
- https://coastalholidayproperty.com/ckfinder/userfiles/files/39339611787.pdfIn PDF document text
- http://kozelskadm.ru/files/uploads/files/luxoxafareb.pdfIn PDF document text
- http://vervesimuhub.com/userfiles/file/98655235203.pdfIn PDF document text
- http://anysoldierfundraiser.com/clients/a/af/af293656121fcb8b60a8c910089dd81c/File/46619650899.pdfIn PDF document text
- http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e1ddc7d8369---mudeduwiwinepedipo.pdfIn PDF document text
- https://stef-nancy.fr/upload/document/57664735807.pdfIn PDF document text
- https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a97c37ab2f8---45917113215.pdfIn PDF document text
- http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16076a473cd858---fogaparajagevixawut.pdfIn PDF document text
- http://tjsijiqing.com/ckfinder/userfiles/files/2021/0607/082c6190ca24e7e37cfd49ac1a0c462d.pdfIn PDF document text
- http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16088d5e3459cd---jurepasomuvivezisumuki.pdfIn PDF document text
- http://lab4050.com/upload/editor/file/19332013930.pdfIn PDF document text
- http://studiosimonepantaleo.it/userfiles/files/84240345026.pdfIn PDF document text
- http://travelsi.ru/ckfinder/userfiles/files/33576730402.pdfIn PDF document text
- https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/in14kpe1enmgse28t6pp1pl5dk/fewotabaw.pdfIn PDF document text
- https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/7b7715343764908bff241ab6eb3f6110/64704216407.pdfIn PDF document text
- https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/8mi2ct86r6guh4o6b0es148527/gojowizutuxonipazoje.pdfIn PDF document text
- http://www.roosprommenschenckelfoundation.nl/ckfinder/files/files/fomobokudipikasifa.pdfIn PDF document text
- http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/oamp1acst0r6djlklmmlhbufg5/5791205219.pdfIn PDF document text
- http://tovicetour.com/FileData/ckfinder/files/20210630_81FDA11A6D51B54E.pdfIn PDF document text
- https://bharatbiodiesel.com/userfiles/file/62173698043.pdfIn PDF document text
- https://markeishahall.com/wp-content/plugins/super-forms/uploads/php/files/7dc9c9749da46b715b2e353c93deb360/32751104270.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=snapchat+suspicious+login+text+bypassPDF 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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000134b6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x134B6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00014cc8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14CC8 | 20544 bytes |
SHA-256: ff2f516b42fccd6d2e18cb0040b6e6c0c566a38880026ae0f2636b111d27d082 |
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font_02_sfnt_off00018322.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18322 | 11084 bytes |
SHA-256: 457ff59dbe580e042fad9067e25ce3bdac5e9233030d277b1e6a266e8986f238 |
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