MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating it likely exploits a vulnerability or serves as a phishing lure. The numerous embedded URLs, many pointing to compromised CMS uploads or disposable hosting, suggest a link farm designed to redirect users to malicious sites. No scripts were extracted, but the overall structure and URL distribution are consistent with a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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 http://greenhere.cn/upload/ckimg/files/202109020529552641.pdf In PDF document text
- http://ecohort.com/userfiles/files/87679823567.pdfIn PDF document text
- https://10playsolutions.com/clients/softklk/documents/_articles_/file/35092359323.pdfIn PDF document text
- http://longruiglass.com/ckfinder/userfiles/files/20210902_122309.pdfIn PDF document text
- http://www.casasemio.com.br/ckfinder/userfiles/files/38606179148.pdfIn PDF document text
- http://xn--brneneskontor-landsforening-b0c.dk/userfiles/file/38250883341.pdfIn PDF document text
- https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/8d6df7034ae9691b51f1b94e43ed0df5/55682206316.pdfIn PDF document text
- http://119pump.net/d/files/84784055037.pdfIn PDF document text
- http://rapabzenec.cz/obrazky/files/40963955648.pdfIn PDF document text
- https://xistenze.nagydavid.com/files/files/62874035663.pdfIn PDF document text
- https://ladangmimpi2.com/contents/files/xugepesafuxepusano.pdfIn PDF document text
- https://sunrise-photon.com/upfiles/editor/files/47060939677.pdfIn PDF document text
- http://vankouwenenmastop.nl/UserFiles/file/84551526879.pdfIn PDF document text
- https://www.sibirprokat.ru/ckfinder/userfiles/files/nilipafirekigujifo.pdfIn PDF document text
- http://agriturismolescuderie.eu/userfiles/files/pepiridetegataragupo.pdfIn PDF document text
- http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132912666a56---foboxipezawu.pdfIn PDF document text
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/bdf3ef2ae087faa687eb64f7c6712182/vazej.pdfIn PDF document text
- http://csc028.com/userfiles/file/20210906021249_9mh82z.pdfIn PDF document text
- http://kpdb.org/userfiles/files/54155723395.pdfIn PDF document text
- http://gmtshipping.com/attachment/file/gogodarirujafelukit.pdfIn PDF document text
- http://icsbc.ru/fuploader/file/xujenarapufosoxabiwona.pdfIn PDF document text
- http://sosnovgeo.ru/userfiles/file/buwetusowubo.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=how+to+get+local+news+channels+on+firestickPDF 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_off0000af2d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAF2D | 10784 bytes |
SHA-256: 6499b0ee133086d9951bfff744aa385f5a99826f6d2c9fda20cee0cd387706c8 |
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font_01_sfnt_off0000c7f7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC7F7 | 14712 bytes |
SHA-256: 07a0ea8eec3b7f8af49c632ced5d6933088e2910108ccc0d035929913f7cdfeb |
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font_02_sfnt_off0000ed0b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED0B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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