MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, with numerous embedded URLs pointing to potentially compromised WordPress upload directories and other disposable hosting. These links likely serve to redirect users to malicious payloads or phishing sites, a common tactic for initial access via spearphishing attachments.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
Heuristics 6
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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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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://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a0ae4bd0d---58057936196.pdf In PDF document text
- http://tranhdaquydep.vn/upload/files/vakosanamojovuwu.pdfIn PDF document text
- https://finatwork.com/userfiles/file/fupiken.pdfIn PDF document text
- https://daulte.ch/ckfinder/userfiles/files/88903617988.pdfIn PDF document text
- http://sushiloverca.com/uploads/files/23035040231.pdfIn PDF document text
- http://asiadomainstore.com/userfiles/file/9545766116.pdfIn PDF document text
- http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aafdcb4e7b4---welaxiwurewosinejikejowa.pdfIn PDF document text
- https://www.syah.org/wp-content/plugins/super-forms/uploads/php/files/be14c11fa54326acc5fbce052bfd7eee/12527969271.pdfIn PDF document text
- https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077268b3f031---77229044612.pdfIn PDF document text
- https://www.nuyew.academy/wp-content/plugins/super-forms/uploads/php/files/a722a04d63bd1d77fbcc2c2b756dacc0/23335494625.pdfIn PDF document text
- http://www.satit.nrru.ac.th/satit/_Adminis/ckfinder/userfiles/files/xajudifo.pdfIn PDF document text
- http://synphabase.ch/upload/file/29764055193.pdfIn PDF document text
- https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/fuean1cuojkf6nal5kfrnq12k4/perevubuvakurisem.pdfIn PDF document text
- https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/bd8jsinjfa2e2se0r84r689gfo/velolajul.pdfIn PDF document text
- http://china-engine.net/ckfinder/userfiles/files/32340947510.pdfIn PDF document text
- https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c259c7b828a---17729190608.pdfIn PDF document text
- http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e880f7a9684---fixasagenin.pdfIn PDF document text
- http://studiotecnicobonoli.com/userfiles/files/ragesenudozemeveka.pdfIn PDF document text
- http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1608109067e925---86899839781.pdfIn PDF document text
- https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5d8f227359---3029280174.pdfIn PDF document text
- http://skyline64reunion.com/clients/e/ec/ec378541aa9b73e2b99de5ca5545ec21/File/6794194737.pdfIn PDF document text
- https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b58c98a906d---sadosidewopixak.pdfIn PDF document text
- https://sinarwaja.com/account/files/39453244381.pdfIn PDF document text
- http://kepco-group.com/uploaded_files/userfiles/files/gabemogim.pdfIn PDF document text
- http://eventclub.pl/userfiles/file/tasegozexolosanuke.pdfIn PDF document text
- http://rspon.pl/images/wyswig_images/file/jusokuvifewiwobena.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=read+pdf+text+in+pythonPDF 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_off0000e77b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE77B | 10540 bytes |
SHA-256: 17e73ca95852227963daf7f6b6053833921baa858e4c58105e5ee349f68e3ba4 |
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font_01_sfnt_off0000ff71.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF71 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011783.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11783 | 19040 bytes |
SHA-256: 5217592619f357d8364560ed86778877659d78e1744e201b0f7c0b27452a0bfe |
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