MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The document contains numerous embedded URLs, many of which point to PDF files hosted on what appear to be compromised WordPress sites or disposable hosting. This suggests a link farm designed to lure users to malicious content, likely for phishing or SEO poisoning.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://cructi.ru/uplcv?utm_term=fire+hd+10+9th+generation+android+version PDF link annotation
- http://racecross.com/upload/edito_fckeditor/file/7291577218.pdfIn PDF document text
- http://mansiya.com/uploadfile/files/44020140134.pdfIn PDF document text
- http://dijladentalcenter-qa.com/userfiles/file/jagimewari.pdfIn PDF document text
- http://thuephotocopytaihanoi.com/upload/files/rekafena.pdfIn PDF document text
- https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/8d8722fdfc969f3caed6d1aff07cead2/27608051484.pdfIn PDF document text
- https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe400c964d---kuxajakaga.pdfIn PDF document text
- https://happen.webasl.com/userfiles/file/65068633959.pdfIn PDF document text
- http://mariekevanvlierden.nl/survey/userfiles/files/3253603427.pdfIn PDF document text
- http://cathyknightwaite.com/ckfinder/userfiles/files/31271891651.pdfIn PDF document text
- https://chetanaus.org/bheru/uploadfiles/file/dajigaxisufabar.pdfIn PDF document text
- https://perfecthospitals.com/ckfinder/userfiles/files/zudasalaxibumero.pdfIn PDF document text
- http://aftckwt.com/uploads/file/ferubofokuvas.pdfIn PDF document text
- http://njbeihang.com/uploadfile/file///2021091314171996.pdfIn PDF document text
- http://jolanyee.com/upload/files/202109132013086441.pdfIn PDF document text
- http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613a91ccb33aa---xowekavinif.pdfIn PDF document text
- http://www.waetsukai.jp/system/ckfinder/userfiles/files/98774073332.pdfIn PDF document text
- http://hongshengfish.com/uploadfiles/20210904/2109041605165011372z46n23sbwky.pdfIn PDF document text
- https://iqrainternationalschool.org/_assets/files/72180758154.pdfIn PDF document text
- https://franchisebusinessadvisors.franchisebrokerwebsites.com/broker-site/files/files/levifabufunavajidinitoxi.pdfIn PDF document text
- https://czus-lukasa.sk/userfiles/file/3799125423.pdfIn PDF document text
- https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/bf7iikk443niq9nin32v4mkl90/romoxewugib.pdfIn PDF document text
- http://ildongwire.com/userfiles/file/livojulijukutaxo.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_off0000d8ac.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8AC | 10868 bytes |
SHA-256: 830faa2f032984248daaabfe539ae856a272c20ed1ea5d8d18ce651113092df8 |
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font_01_sfnt_off0000f19c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF19C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000109ae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109AE | 18524 bytes |
SHA-256: 38587aed961b3b5cd2dcea0296a9a5e36fd0fe4869d2cc881bcd0a092056d191 |
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