MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. Static analysis revealed it functions as a link farm, containing numerous URLs pointing to various websites, some hosted on compromised WordPress installations. The presence of 'utm_term' parameters in some URLs suggests a potential phishing or spam campaign aimed at luring users to click on these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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=iphone+camera+compared+to+android PDF link annotation
- http://osingenieria.com/images/admin/file/56988107878.pdfIn PDF document text
- http://kaushalacademy.org/ckfinder/userfiles/files/pafevefadovunufidipusawi.pdfIn PDF document text
- https://sooryasales.com/uploads/file/pujulosepobuzimepefi.pdfIn PDF document text
- http://eco-building.cz/UserFiles/File/11618669569.pdfIn PDF document text
- https://xn--lenachatka-57b.pl/uploaded/file/57660530271.pdfIn PDF document text
- http://uitetenindex.nl/images/uploads/13589552296.pdfIn PDF document text
- http://yjccnc.com/upload/files/52614936623.pdfIn PDF document text
- http://chipgene.com/image/files/20210908_211555.pdfIn PDF document text
- http://lachina.cn/upload/file/ripazapotuwekin.pdfIn PDF document text
- http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/161400653a5080---47989758999.pdfIn PDF document text
- http://putzlappenborner.at/editor_up/gurox.pdfIn PDF document text
- http://2sisaccount.com/userfiles/files/xixow.pdfIn PDF document text
- http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/16142c4baea4bc---xoxunebasukoxovaxol.pdfIn PDF document text
- https://artlabjo.com/userfiles/file/wubaguxolud.pdfIn PDF document text
- http://baikalspring.ru/ckfinder/userfiles/files/80764348810.pdfIn PDF document text
- http://hophungvietnam.com/app/webroot/uploads/files/bewezorukifotalevuba.pdfIn PDF document text
- http://www.wiz-fac.com/uploadImg/file/54555567333.pdfIn PDF document text
- https://mylin.in/ckeditor/ckfinder/userfiles/files/momumomidifek.pdfIn PDF document text
- http://ofitecnic.es/files.ofitecnic/fck_up/file/99637539471.pdfIn PDF document text
- http://85560891.com/upfolder/e/files/20210914081819.pdfIn PDF document text
- http://patroha.hu/file/96076044021.pdfIn PDF document text
- https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/5k82hvop4cbqn36j1joi97vgf4/26712995574.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_off0000b626.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB626 | 15792 bytes |
SHA-256: 9aa608f2b39550a12336866858af9258656bd953b3454ca3efa55332a2c44572 |
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font_01_sfnt_off0000de75.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE75 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f68c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF68C | 10516 bytes |
SHA-256: f79ed4745ad39c45bb450e26f4360f9ffc730b3d8736279df33d84b0cd52081b |
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