MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to compromised CMS uploads and disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this attack pattern.
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://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/d941645ef3cb9a3493d78d6dee03dba4/vuwijewe.pdf In PDF document text
- http://shengyaweb.com/uploadfile/file/2021091419223696.pdfIn PDF document text
- http://divorcefinance.nl/uploads/file/5050584016.pdfIn PDF document text
- http://bscartridge.com/pic/gevusopagopepu.pdfIn PDF document text
- http://bloemenwinkelindex.nl/images/uploads/81880494332.pdfIn PDF document text
- http://www.serge-valentin.net/ckfinder/userfiles/files/katekajotovejonelagi.pdfIn PDF document text
- http://thegioicamdo.com/upload/files/61451878455.pdfIn PDF document text
- https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/66f3ff3c550fcb5b6da16a0a1868a1f2/nunukinitukinole.pdfIn PDF document text
- http://technology-mp.it/userfiles/files/65313129677.pdfIn PDF document text
- http://prograsifkalip.com/files/81020617902.pdfIn PDF document text
- http://hotelalbicia.com/userfiles/file/vizedetaxafib.pdfIn PDF document text
- http://borik.customreal.sk/data/files/47585616180.pdfIn PDF document text
- https://bgg.pirkitpadangas.lt/ckfinder/userfiles/files/37972307327.pdfIn PDF document text
- http://kfnmsz.com/upfolder/e/files/20210910152505.pdfIn PDF document text
- https://autosaloncenter.com/uploads/file/75130547872.pdfIn PDF document text
- http://www.introspekta.si/ckfinder/ckeditor_uploaded_files/files/77151033121.pdfIn PDF document text
- https://futuresbuilder.net/dayafter/uploadimages/newsimages/file/78287191538.pdfIn PDF document text
- http://mingmitrcoffee.com/user_img/files/jizakobexaxanuzizubobuw.pdfIn PDF document text
- https://tonerihned.cz/userfiles/file/99087346010.pdfIn PDF document text
- http://cafegreenwichvillage.com/uploads/files/92927615383.pdfIn PDF document text
- https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/9687d6a1250de34933ffdad11dda613a/nakawobadapejefu.pdfIn PDF document text
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/kce3cis0jksrihaodd2kaok9h7/10681450066.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BC%D1%83%D0%B7%D1%8B%D0%BA%D1%83+%D0%B2%D0%BA%D0%BE%D0%BD%D1%82%D0%B0%D0%BA%D1%82%D0%B5+%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+%D0%B4%D0%BB%D1%8F+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4PDF link annotation
- https://unimedbelem.com.br/painel_template/assets/global/plugins/ckfinder/userfilesfiles/32280724878.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b4f6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB4F6 | 11296 bytes |
SHA-256: 717fef8fd4e5466a81d1298ff02edaed51de5db3c517b15978bc25c490b273d5 |
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font_01_sfnt_off0000cf2e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF2E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e740.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE740 | 21784 bytes |
SHA-256: 7179841c3d5fc4ef68d6c462f1d76b483ca2b5bea62a7eae885fc42ec192d747 |
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