MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. Heuristics identified it as a link farm, with numerous embedded URLs pointing to potentially compromised websites. The presence of multiple links on disposable hosting and the use of 'utm_term' parameters suggest an attempt to lure users to external malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
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://nyirfa.hu/uploads/files/popedemabuxaru.pdf In PDF document text
- https://mylin.in/ckeditor/ckfinder/userfiles/files/85508680131.pdfIn PDF document text
- https://billard-hauri.ch/userfiles/file/68853147823.pdfIn PDF document text
- http://parkergeneralcontractors.net/userfiles/file/95035158055.pdfIn PDF document text
- http://www.sospapa24.com/lib/ckfinder/imgupload/files/makikede.pdfIn PDF document text
- http://www.smartlandgroup.com/ckfinder/userfiles/files/763944625.pdfIn PDF document text
- https://worldtradezone.com/userfiles/file/veget.pdfIn PDF document text
- http://alanaf.ru/userfiles/files/63186514346.pdfIn PDF document text
- http://snkpost.com/fckedit_file/file///20210912_0_2_5.pdfIn PDF document text
- http://mizuho-co.net/file/ck/files/vafulaboj.pdfIn PDF document text
- https://xn--psg-9lac.hu/files/files/zuxofuruleli.pdfIn PDF document text
- http://logtech.cz/foto/Image/file/tarulojiti.pdfIn PDF document text
- http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c080d43c2a---58927314216.pdfIn PDF document text
- http://nhatrangpalace.net/app/webroot/upload/files/debunazamono.pdfIn PDF document text
- http://eatoceanic.iorderfoods.com/uploads/files/perokefawivozofugifut.pdfIn PDF document text
- http://zhatuogz.com/uploadfile/file/84108644812.pdfIn PDF document text
- http://ecohouse-lab.com/userfiles/file/gavonipamodekelixitite.pdfIn PDF document text
- https://nonbodepsg.com/uploads/files/nulukex.pdfIn PDF document text
- https://taptigrihnirman.com/singhania/downloads/file/87095132007.pdfIn PDF document text
- http://eros-arena-reutlingen.de/eros/userfiles/file/momosekit.pdfIn PDF document text
- http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/12bac1ab7e84297b433cecec4d22772c/75246012221.pdfIn PDF document text
- https://larrialdiak.es/files/galeria/files/luzopozebibiwopadoboves.pdfIn PDF document text
- https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/c572a235a8de3c56784726c124db53ff/97175384780.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=apple+organizational+structurePDF 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_off0000fbba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBBA | 18192 bytes |
SHA-256: 0da5c55ce4e4489cc00894e158de634dc6d3a357113012786389c6039d5472f3 |
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font_01_sfnt_off00012af0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12AF0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00014307.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14307 | 10688 bytes |
SHA-256: a646153b50c71ee2b68c2a060cb2b8e3f4a1d14c87d355a72d389e75a1567c3a |
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