MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, directing users to multiple external URLs, some hosted on compromised CMS platforms. The presence of numerous PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM firings confirms the document's purpose is to distribute links to potentially malicious or phishing content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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 https://oniceh.ru/uplcv?utm_term=head+first+java+filetype+pdf
- https://mycocoa.org/images/upload/files/gosubonuripew.pdf
- https://kccegis.com/upfiles/content/file/20210911160329.pdf
- http://www.sport-konyv.hu/userfiles/file/65485564293.pdf
- https://doucetplasticsurgery.com/ckfinder/userfiles/files/26789730203.pdf
- https://csn-alliance.com/data/files/51332686380.pdf
- https://suavitinhtannha.net/upload/files/77253550763.pdf
- http://kovofilm.cz/userfiles/file/rumegixiperobivukaf.pdf
- https://www.huaikrachaohospital.go.th/assets/global/lib/ckfinder/userfiles/files/gitevured.pdf
- https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130d4e206176---98282294172.pdf
- http://asupuro.com/user_data/image/file/42209165600.pdf
- http://alexandersorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/10922431927.pdf
- http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613777b629447---zenonusejodunisorawu.pdf
- http://chothuexehochiminh.com/userfiles/file/puxirowuwewafamelenariviz.pdf
- http://nessie-vinylcare.com/file/jofesoxopefiguwinosezi.pdf
- https://austdoorcaocap.com/upload/files/beruvidoxodovimadigowugow.pdf
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/ed50990a485f97764ba60d735505c81a/zisagubaboluxiwejaro.pdf
- http://faisaltowel.com/survey/userfiles/files/42955440623.pdf
- http://trips-in.com/ckupload/files/98216039255.pdf
- http://pro-group.ru/userfiles/file/sibexizeb.pdf
- http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613d3859246c1---jepobafagekuzefesipoge.pdf
- http://ketnoikienthuc.com/upload/files/50168172184.pdf
- http://thanuyentea.com/ckfinder/userfiles/files/gimogapikepetowonubalor.pdf
- http://xycrusher.com/d/files/bopodavusekanisijivazu.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d44b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD44B | 16792 bytes |
font_01_sfnt_off0000ec5d.bin9bb890758aebc797780aef3c579a7273a53f2c4b316425745ab32b17549a4f1b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC5D | 17492 bytes |
font_02_sfnt_off0001197b.bin1f7f584b63c5adac50e8089da5e616dbf281ef8b9714260923a76df28ca4dc94 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1197B | 10568 bytes |
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