MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it functions as a link farm. Several URLs extracted from the document point to potentially compromised websites or disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of PDF-specific heuristics like 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' reinforces the link farm attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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://thongthien.vn/upload/files/95735791606.pdf In PDF document text
- http://lutechmed.com/Images_upload/files/puseg.pdfIn PDF document text
- http://proart.by/media/file/refivuranedij.pdfIn PDF document text
- https://vanvoorst.info/uploaded/file/1584661573.pdfIn PDF document text
- http://zonwering-nederland.com/ckfinder/userfiles/files/vomewikiwutibomiw.pdfIn PDF document text
- http://redskap.ru/userfiles/file/86019347699.pdfIn PDF document text
- http://citescolairedeledit.com/include/file/dupafuzozigi.pdfIn PDF document text
- http://dioceseofniranam.org/userfiles/file/lufodub.pdfIn PDF document text
- http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613520be7d31f---zutal.pdfIn PDF document text
- https://bharatiyabhashaparishad.org/ckfinder/userfiles/files/toxoxevakad.pdfIn PDF document text
- http://giovanniseneca.eu/userfiles/files/56076726014.pdfIn PDF document text
- http://liily.jp/upload/file/20210906135259.pdfIn PDF document text
- http://ps-chiptuning.hu/userfiles/files/litiguvisowajeb.pdfIn PDF document text
- http://chinalabware.es/d/files/85296850237.pdfIn PDF document text
- https://tatsolarlight.com/uploads/files/59945536046.pdfIn PDF document text
- http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138b366a1656---25533007335.pdfIn PDF document text
- http://sirmamedia.com/ckfinder/userfiles/files/80710731406.pdfIn PDF document text
- http://dj-venci.com/uploads/pages/files/76866009927.pdfIn PDF document text
- https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/1612f5c7790f7b---gerusinuvupu.pdfIn PDF document text
- https://alhurwallpaper.com/Files/files/88078724053.pdfIn PDF document text
- https://newtech-utm.pl/userfiles/file/38553890412.pdfIn PDF document text
- https://bobecoingatlan.com/uploads/editor/file/saxuri.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=kimi+no+na+wa+manga+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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d848.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD848 | 10372 bytes |
SHA-256: 1acb7958974a0a0d1eea5c804fea49dd198632ac1569a2d8fe8ab4e6089faaff |
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font_01_sfnt_off0000ef80.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF80 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010792.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10792 | 23016 bytes |
SHA-256: ff179748dec68bc406a877300f78661127711a1a48b7550718998bf2c74fb945 |
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