MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 User Execution: Malicious Link
The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites, suggesting a phishing or malware distribution campaign. The heuristic firings indicate a link farm strategy designed to obscure malicious destinations, with ClamAV identifying it as Pdf.Phishing.Trojan. The ML classifier also flagged the PDF as malicious with high confidence.
Machine Learning
- Nyx PDF Classifier malicious score 0.9742
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://irlanc.ru/uplcv?utm_term=internship+report+for+mechanical+engineering+pdf
- http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160923eb6ca936---lapezupexopajozalefer.pdf
- https://heritagecambodiatravel.com/userfiles/file/13346090341.pdf
- http://weiken-rc.com/upload/files/39039498689.pdf
- https://ukdirectremovals.com/wp-content/plugins/super-forms/uploads/php/files/4e171dc47a6949b4d7c950e94851d18c/29603143046.pdf
- http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607e99a50056f---86167907424.pdf
- http://noxsun.com/jingkelun/userfiles/files/20210604064837.pdf
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bd58dc7a76d---71171412392.pdf
- https://24emk.ru/ckfinder/userfiles/files/xurumegedewata.pdf
- http://vistobrasil.net/uploads/file/20144031137.pdf
- https://paidionresearch.com/userfiles/files/19137060782.pdf
- https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160802e6f07636---48930294292.pdf
- http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/160929e389dda8---17684202714.pdf
- http://dentherapia.hu/files/file/faposowunafovijagomasabox.pdf
- http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160961d19343ba---10411277057.pdf
- http://ambulatorioveterinariorigolon.eu/userfiles/files/54297168319.pdf
- https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/46vl4dmqsh8h1bpueakkdvm37q/77671978908.pdf
- http://dush-kz.ru/uploads/fck/file/2094788575.pdf
- https://jamurgoreng.net/contents//files/ruxesapipuzonexawewebemu.pdf
- https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/7c7830c5413bf494b8295cdbd32f327e/xarasunojosudi.pdf
- http://www.kickcommerce.com/userfiles/file/38503268437.pdf
- https://centrobrands.com/wp-content/plugins/super-forms/uploads/php/files/88eae16d2dc93779a7aad485b19f0e83/wogisebifipamanow.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093d416e0ceb---jasesekakugara.pdf
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e1541ccb4f---xejogelizogoriv.pdf
- http://etenindex.nl/images/uploads/77019361007.pdf
- https://topclassgreenery.nl/images/file/58182537325.pdf
- https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd0f2ccf0e---23991432768.pdf
- https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/a95d87781784bcea16206e51dfc2f5d6/japuriluzovanuj.pdf
- https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/8u8ci04mipq0oomstuo6ng5m4g/91523880000.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_off0002087e.bin968d148c986a223db98649d6a1e74c5538e178113f5bb4a3344385f8e7ac5a51 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x2087E | 17664 bytes |
font_01_sfnt_off0002369d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x2369D | 16792 bytes |
font_02_sfnt_off00024eb4.bin750c0716506b86053e72fff850387b5b31c1415aa7ff4e386d1ce9787ba0ee81 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x24EB4 | 11016 bytes |
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