MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute traffic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution through these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9989
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://yigang-lin.com/uploads/files/202109061224281051.pdf In PDF document text
- http://aptekarynek.pl/zdjecia/fck/file/7291791867.pdfIn PDF document text
- http://55pluscommunityspecialist.com/userfiles/files/pawusurujumupo.pdfIn PDF document text
- http://brickform.cz/obrazky/files/lalomufe.pdfIn PDF document text
- http://globalfeedindustry.com/upload/files/31224048631.pdfIn PDF document text
- http://bibrka-school.org.ua/ckfinder/userfiles/files/rasadixenevaxigulivuxir.pdfIn PDF document text
- https://pirkitpadangas.lt/ckfinder/userfiles/files/99248222743.pdfIn PDF document text
- https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/6tt869n6lgosckk8r43hf1lfkn/gusorokazevigamofov.pdfIn PDF document text
- http://carszana.com/image/upload/File/23177881542.pdfIn PDF document text
- http://tjsijiqing.com/ckfinder/userfiles/files/2021/0918/12312800ce9839edcbe48cefebe4ceb1.pdfIn PDF document text
- https://www.suep.gr/ckfinder/userfiles/files/3030789140.pdfIn PDF document text
- http://studiotecniconuti.it/userfiles/files/ladofesakunojolefugu.pdfIn PDF document text
- https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/8f5a6e1d64e96948244029db4d4aea9e/pejomomekasetujexedof.pdfIn PDF document text
- https://nsstore.mx/ckeditor/ckfinder/archivossubidos/files/pimifalavolofiz.pdfIn PDF document text
- http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b52991fb47---navimatonu.pdfIn PDF document text
- http://kayapaliinsaat.net/file/68181290342.pdfIn PDF document text
- https://lazeo.nl/userfiles/file/84493106246.pdfIn PDF document text
- https://bhandarisurgical.com/ckfinder/userfiles/files/89879923131.pdfIn PDF document text
- http://mellorymotors.ru/admin/ckfinder/userfiles/files/fasedafuxanetufelu.pdfIn PDF document text
- http://thegoshow.net/userfiles/file/10153986533.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=android+73+dragon+ball+superPDF 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_off000124d9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x124D9 | 20868 bytes |
SHA-256: 2d2abbf70e2eddb3a17217b8097d73e5ae3f7b1793d380332b5c38c39a0c713a |
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font_01_sfnt_off00015b83.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15B83 | 10912 bytes |
SHA-256: c1d9fafbd0e0819effbf23a9c587e9ef4085d8749f387b9d9896db8a713c8e9e |
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font_02_sfnt_off00017483.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17483 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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