MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many pointing to compromised CMS upload directories and disposable hosting, indicating a link farm designed for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. The primary attack pattern involves luring users through a malicious attachment to a network of redirecting links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://sentai.cc/data/file/20210919_100936_929.pdf In PDF document text
- http://vhshf.de/File/79412503830.pdfIn PDF document text
- http://www.greenfield-sustainability.com/images/files/68458807917.pdfIn PDF document text
- http://waetsukai.jp/system/ckfinder/userfiles/files/28284341088.pdfIn PDF document text
- https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/3ba1fdbc7be5e021face9e37896be850/23492900465.pdfIn PDF document text
- http://www.ondebiz.com/userfiles/file/nadakejuzaduweki.pdfIn PDF document text
- http://ip-malkov.ru/uploads/files/lidupajomisitezix.pdfIn PDF document text
- http://soft-pro.hr/upload/datoteke/tezawiwesabe.pdfIn PDF document text
- http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613459c6a5dcb---zawitasoxujawavulitalag.pdfIn PDF document text
- https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/tf4oou92spk9q03qtngr1hbdov/gasuzexatuse.pdfIn PDF document text
- http://chayka-svg.ru/files/teminibosal.pdfIn PDF document text
- https://knoxvilleremembers.com/media/xorebedudaj.pdfIn PDF document text
- https://stpeterscbs.ca/ckfinder/userfiles/files/17569692516.pdfIn PDF document text
- https://kokomanis.com/contents/files/46225144440.pdfIn PDF document text
- http://www.deco-interieure.com/userfiles/file/85088328610.pdfIn PDF document text
- http://eakqshop.com/ckfinder/images_store/files/vodekekiwif.pdfIn PDF document text
- http://yuhuimachinery.com/d/files/43079428267.pdfIn PDF document text
- http://iberryhomemade.com/userfiles/files/28735491825.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=bangla+choti+rape+golpoPDF 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c8b1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC8B1 | 16468 bytes |
SHA-256: 13208f466f177ce927de9f753529b2bfa5c4922f3492da7eb04f02c798a4175e |
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font_01_sfnt_off0000dfa2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDFA2 | 20488 bytes |
SHA-256: 6fc81c17ce60a8bdca8ec9804d7dca373e836416781e956677ebec17797b9b65 |
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font_02_sfnt_off00011541.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11541 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_03_sfnt_off00012d58.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D58 | 10536 bytes |
SHA-256: f30bdacf6375d2e79fd04e4fbee60a3a8405bd065c3806098e7e7e3e2f92d562 |
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