MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains numerous embedded URLs and link farms pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The document body is heavily obfuscated and unreadable, providing no direct user-facing content, but the overall structure and URL analysis strongly indicate a malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9806
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://synerhu.ru/uplcv?utm_term=trifling+meaning+in+kannada PDF link annotation
- http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/160b1cb46a87c3---pibevisabek.pdfIn PDF document text
- http://www.siscbolivia.com/admin/uploaded/fck/file/xotudixug.pdfIn PDF document text
- https://ficsllc.com/wp-content/plugins/super-forms/uploads/php/files/7esms9shgo47g7iq298ifmilkf/43118988187.pdfIn PDF document text
- http://cattaneoarchitetti.it/userfiles/files/23510982189.pdfIn PDF document text
- https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/6f7a9026658190498b86d9bf39192485/tudiduso.pdfIn PDF document text
- http://nordicaluminium.ru/userfiles/file/joxetufawatebaroko.pdfIn PDF document text
- http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc0d5112d9---pedotimupozoz.pdfIn PDF document text
- https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/139eedar4dcgtphhbauh1fgfb2/nijodijolatuti.pdfIn PDF document text
- http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5b7d12555b---7595651418.pdfIn PDF document text
- https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160832c46172fa---xojozoxusiv.pdfIn PDF document text
- http://beateromer.com/bilder/file/xupavakogabum.pdfIn PDF document text
- https://hosvagyok.hu/userfiles/file/2483966193.pdfIn PDF document text
- http://giaoducvietnamtv.com/images/ckeditor/files/vivegewa.pdfIn PDF document text
- http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3ae33947a7---wemigosuwirov.pdfIn PDF document text
- https://acp-luxusingatlanok.hu/ckfinder/userfiles/files/2992822789.pdfIn PDF document text
- http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/f10b0d090146f16323ef2777902bf56b/pepikowur.pdfIn PDF document text
- https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/1608fe26b8318e---55211562615.pdfIn PDF document text
- http://zwickerfoto.hu/_user/file/subaxid.pdfIn PDF document text
- https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/9j7aq46oc40n45r7i8s5h5spg3/jipifivinexuxikir.pdfIn PDF document text
- https://uleiuri.ro/userfiles/file/fupututuxozunidoxovufeki.pdfIn PDF document text
- http://poorclarescork.ie/images/wufojonevorovegovomapole.pdfIn PDF document text
- https://haps.company/wp-content/plugins/super-forms/uploads/php/files/4ie8qehmotc21hv8ktcctm67q7/66836188245.pdfIn PDF document text
- 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 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_006_off000167b1.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x167B1 | 18808 bytes |
SHA-256: 6b6d0ba4c701e53334ad10e0a92f6f9d2f00afaeb84416c9926c1222a797a82d |
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font_00_sfnt_off0000e893.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE893 | 3868 bytes |
SHA-256: 2072854c70c2a492e363da67c5a238a2a997b3737a084f1f5948aa0842a02241 |
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font_01_sfnt_off0000f77d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF77D | 10368 bytes |
SHA-256: 35af3c2be4b8b3511dea19bb9e8b50acfabe27fdd311f52741876d700ee44320 |
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font_02_sfnt_off00010e8f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E8F | 27452 bytes |
SHA-256: c0c8bc011895e284bd432027a80c5356529d5b92ca050ee5b34d28c0cf5387f7 |
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font_03_sfnt_off00014fa0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14FA0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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