MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress upload directories or disposable hosting, suggesting it functions as a link farm. The presence of external URIs and the overall structure strongly suggest a phishing or malware distribution campaign, likely initiated via spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://infrive.ru/uplcv?utm_term=countertransference+social+work
- http://teusz.pl/UserFiles/file/vozorupilixarepa.pdf
- http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/mfo8rg955h75j0atqhhnkgt777/38058353500.pdf
- http://ahdongjiu.com/upload_fck/file/2021-5-3/20210503111957215708.pdf
- https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/f2b7168bb748030cb4c6b35aaa2d54d0/rixenajalajegukininum.pdf
- https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/7cffcc4c9dc141553bc8dcdaee0b8589/36590216674.pdf
- https://whiteelephant.co.in/wp-content/plugins/super-forms/uploads/php/files/79d2ddb54c07750b88738abba187b374/60027560175.pdf
- http://netinflux.net/userfiles/file/wiwotudibasopuxa.pdf
- https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8b0a7ee74---kavegovakomesajojoxa.pdf
- http://canvangdientu.com/images/file/31759334190.pdf
- http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a3a67333e9a---95734967939.pdf
- https://stvorki.ru/files/file/vitagufamujujitata.pdf
- https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/160c16f47d8a37---46796429548.pdf
- http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fc89e893ce---lililovokamaga.pdf
- https://www.wflorlando.com/wp-content/plugins/super-forms/uploads/php/files/1048b0f86c02f604c57c43b0476a3938/fatimuzawaw.pdf
- http://cherryontop.pl/upload/fotki/file/46713825367.pdf
- https://baileyelectrical.services/wp-content/plugins/super-forms/uploads/php/files/uak1605kobbh5rkgb4sdggv7mm/gojopizetobofi.pdf
- http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607898abef6f5---64410138048.pdf
- https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cfcd671a3a---87311435667.pdf
- https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/6dai4hckf8lbpubio2tl7rqbe3/26851091284.pdf
- http://doktor-okonski.pl/uploadimg/file/pafibizevulopopobifepu.pdf
- https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16072ddf2e819b---67843417255.pdf
- http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d875f8794f---27662859448.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ff3d.bin7a59b983c501c7b0bc3568f849789b0d232abcff2bfcbb31423d81113d4980de |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF3D | 17236 bytes |
font_01_sfnt_off00012c05.bin891b61ebae68ced8917e17e4c25553ea10b31bc94df49e77c002b26aec92874a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12C05 | 10636 bytes |
font_02_sfnt_off000144a1.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x144A1 | 16792 bytes |
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