MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous external links, many hosted on compromised or disposable domains, indicative of a link farm used for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of multiple PDF-specific heuristics related to URI and link farms further supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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://infrive.ru/uplcv?utm_term=unit+test+android+tutorial PDF link annotation
- https://esterkins.de/ckfinder/userfiles/files/53584504783.pdfIn PDF document text
- https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/9f7d9e01aa4458f7ee28a6aa15d4de2c/sidijar.pdfIn PDF document text
- https://homecareangels.ca/files/files/files/liluronote.pdfIn PDF document text
- http://leadingedgecorporate.com/user_images/file/14391907035.pdfIn PDF document text
- http://manchetenewsms.com.br/ckfinder/userfiles/files/42683052235.pdfIn PDF document text
- http://uniroll.pl/user_images/file/degoxudegeri.pdfIn PDF document text
- http://hstechno.com/userData/ebizro_board/file/69562051437.pdfIn PDF document text
- https://eniedu.com/data/file/20210917012510.pdfIn PDF document text
- https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/14dad767fb774114ca5a9fdc41de2695/solowatukarujufedukil.pdfIn PDF document text
- https://nhahangphongcanh.com/uploads/files/9062363635.pdfIn PDF document text
- http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d160ea0f71---gulofelosakesidimirofez.pdfIn PDF document text
- https://bhopalliteraturefestival.com/mpsdp/uploads/files/99272375728.pdfIn PDF document text
- http://tageedesign.com/ssmpt/documents/file/xisok.pdfIn PDF document text
- http://www.smwiarus.pl/ckfinder/userfiles/files/29012676940.pdfIn PDF document text
- https://raovat72.vn/uploads/news_file/xibegowobibobonise.pdfIn PDF document text
- http://elektrostroy.kz/ckfinder/userfiles/files/geladebobipafutejebezisow.pdfIn PDF document text
- http://antasboru.com/guvennet/resimlerfiles/xumelofixibimojunuguk.pdfIn PDF document text
- https://dakhoathienhoa.net/images/files/148643000.pdfIn PDF document text
- https://bitree.com/ckfinder/userfiles/files/39892779752.pdfIn PDF document text
- https://turbooto.vn/upload/files/17962945606.pdfIn PDF document text
- http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/161407fdc85592---gozasarazago.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_off0000e171.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE171 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f983.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF983 | 17708 bytes |
SHA-256: e74dd0f91f79d25fdb364a861c162c6a141777194afb960e878b134a9ec62ded |
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font_02_sfnt_off000127e9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x127E9 | 10348 bytes |
SHA-256: 16cec63434f40e2b3e2ad1bc49f167bfd94c49190670efe9f115794b46cfc318 |
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