MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains numerous links to external websites, many of which are hosted on compromised CMS upload directories or disposable hosting, indicating a link farm designed to distribute malicious content. ClamAV detected this file as Pdf.Phishing.Trojan, further supporting its malicious nature. The presence of embedded URLs and the overall structure suggest an attempt to redirect users to potentially harmful sites, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier suspicious score 0.4113
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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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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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://fong-cai.com/upload/files/pabawoxosifises.pdf In PDF document text
- http://zaun-produzent.de/userfiles/file/mefoviletakomakar.pdfIn PDF document text
- http://gianenricofabro.com/userfiles/files/27664219756.pdfIn PDF document text
- http://bordahusfeldolgozo.hu/editor_up/lupanududimuvasu.pdfIn PDF document text
- http://studiomedicoveterinariobellucci.eu/userfiles/files/49555792657.pdfIn PDF document text
- http://righetti-ticozzi.it/userfiles/files/98870256429.pdfIn PDF document text
- https://safarekhoob.ir/basefile/safarekhoobir/files/fifete.pdfIn PDF document text
- https://learningsolution.ca/userfiles/files/80923375786.pdfIn PDF document text
- http://bycongroup.com/UserFiles/file/mogopuze.pdfIn PDF document text
- https://sindhuinvestment.com/ckfinder/userfiles/files/lekejewokuwelaxejubi.pdfIn PDF document text
- http://saxonrt.hu/img/userfiles/files/lozuwetemulalotenodesib.pdfIn PDF document text
- http://proclima-membranes.ru/userfiles/file/3148286329.pdfIn PDF document text
- https://picinterior.com/ckfinder/userfiles/files/jenexexaze.pdfIn PDF document text
- http://jgbt.us/pds/userfiles/files/62028274351.pdfIn PDF document text
- http://www.moyekolodin.com/files/92636647952.pdfIn PDF document text
- https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/f517b311e4340ba9584dbd7f9e86fe8d/wisegigavekan.pdfIn PDF document text
- https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/1959f7979150be7f1ef80bd9ad71db7d/49202842373.pdfIn PDF document text
- http://buffagiuseppeinfissi.com/userfiles/files/didaxugefufifekikax.pdfIn PDF document text
- https://eastmanllc.com/ckfinder/userfiles/files/torefu.pdfIn PDF document text
- https://hoatuoi360.vn/uploads/files/larajovu.pdfIn PDF document text
- http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1614094fddb890---49996223685.pdfIn PDF document text
- http://giaydantuongphongkhach.net/images/news/file/7966090744.pdfIn PDF document text
- https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ee1c168747---nupomu.pdfIn PDF document text
- https://tezerwatch.com/file/upload/files/09-17-21-36-14-33.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=how+to+cast+from+phone+to+laptop+using+chromecastPDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d746.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD746 | 17420 bytes |
SHA-256: e6eaf96116a3ca0ad18e828c9aac631566675703694770bcbf6a24f41fbda660 |
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font_01_sfnt_off0001042b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1042B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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