MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and ML classifiers indicated a high probability of maliciousness. Heuristics identified it as a link farm pointing to compromised WordPress uploads and disposable hosting, suggesting an attempt to redirect users to malicious sites. The embedded URLs and the nature of the heuristics strongly indicate a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://vibrator4you.cz/UserFiles/File/xonosifet.pdf In PDF document text
- https://aslimitada.com/userfiles/file/586355667.pdfIn PDF document text
- http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161325537132a7---bulamamupelima.pdfIn PDF document text
- http://kirakuramenandsushi.com/uploads/files/milagizoguburaru.pdfIn PDF document text
- http://sakem.org/userfiles/files/wasufopixurakoxiba.pdfIn PDF document text
- https://kalashad.com/userfiles/file/geroni.pdfIn PDF document text
- http://halmar.info/userfiles/file/begotik.pdfIn PDF document text
- http://lnyuanzong.com/uploads/files/20210907081802.pdfIn PDF document text
- https://nic-irq.com/userfiles/files/vinenas.pdfIn PDF document text
- http://nanouklid.cz/upload/file/78921875825.pdfIn PDF document text
- http://w-w.cn/isee/pfm/cms/uploadfile/fck/file/gumewarolamajob.pdfIn PDF document text
- http://12shio5.com/contents/files/87398187520.pdfIn PDF document text
- http://shopsuathientu.com/uploads/userfiles/file/97591331293.pdfIn PDF document text
- https://happy-playground.gr/uploads/_uploads/files/14255878279.pdfIn PDF document text
- https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/c26fp5on0n91gkv03p4avjenie/92357561490.pdfIn PDF document text
- https://www.seblocation.com/ckfinder/userfiles/files/65284481309.pdfIn PDF document text
- http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/pg5djqlose9scb365m1gnncsd7/wewugerosexo.pdfIn PDF document text
- https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/r5en7uul1fd646pa84s94eieg7/767264940.pdfIn PDF document text
- http://goodlack.cz/userfiles/file/19089495406.pdfIn PDF document text
- http://lishasurgical.in/ckeditor/ckfinder/userfiles/files/6716929114.pdfIn PDF document text
- https://harkakotony.hu/UserFiles/file/doxalizezajowizibule.pdfIn PDF document text
- http://nhatnamvina.vn/rich_editor/file/2276867245.pdfIn PDF document text
- http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b692278d71---52924564254.pdfIn PDF document text
- https://xn--z4qq44i.xn--kpry57d/upload/actfiles/topuzeses.pdfIn PDF document text
- http://omonetach.pl/foto/ilustracje/file/45713758526.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=put+apps+in+alphabetical+order+androidPDF 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_off0000eb58.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB58 | 18056 bytes |
SHA-256: 1fad80e309c177adef451116005c57e0802662beac6f8698b40b9d3451cd8e7f |
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font_01_sfnt_off00011a47.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A47 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001325e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1325E | 10852 bytes |
SHA-256: 316518c4af1cc862f729af12820ce0045e07ee7fe066eca155c6c8abc51d1b69 |
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