MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs pointing to compromised WordPress sites and disposable domains, indicating it functions as a link farm. Heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly suggest a malicious intent to redirect users to potentially harmful content. The ML classifier and ClamAV detection further corroborate its malicious nature, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9840
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://laborke.ru/uplcv?utm_term=indian+national+physics+olympiad+book+pdf PDF link annotation
- https://anjingliar2.com/contents/files/44632474248.pdfIn PDF document text
- http://crosswaysrecruitment.com/userfiles/file/xopulalaja.pdfIn PDF document text
- https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/2b0069aae6498033625e2b2d3ba8f11d/bisujoworegexoxowime.pdfIn PDF document text
- https://maintogelonline.bet/contents/files/xowipowomali.pdfIn PDF document text
- http://glampingcaravan.com/userfiles/file/20210904100025.pdfIn PDF document text
- http://foto-preiss.at/upload_files/files/bolosenufadojiti.pdfIn PDF document text
- http://terrietanaka.com/library/files/64104941743.pdfIn PDF document text
- https://tutorlookup.com/ckeditor/ckfinder/userfiles/files/rofiwefezaweb.pdfIn PDF document text
- https://holcom-wd.com/webroot/img/files/13231671742.pdfIn PDF document text
- https://flims.atelierleuthold.ch/userfiles/files/56741105375.pdfIn PDF document text
- http://jmvlpslimited.com/ci/userfiles/files/puwibukawaxevizolamisoxuj.pdfIn PDF document text
- http://doo-san.com/userfiles/file/20210905184907.pdfIn PDF document text
- https://music-group-store.com/upload/files/48480443945.pdfIn PDF document text
- http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/888a9b5083a6fb32546cf00df81cf0d9/20232693095.pdfIn PDF document text
- http://quick-thailand.com/images/uploads/file/dogesaloxop.pdfIn PDF document text
- http://rsport.eu/yonexshop/static/file/foponukatelusejovaxoxudog.pdfIn PDF document text
- http://toyotarent.kr/FileData/ckfinder/files/20210903_8F5B52AD19138A73.pdfIn PDF document text
- https://castel.ro/userfiles/file/fopijakumevutipejikila.pdfIn PDF document text
- http://enjoy.sk/editor_uploads/system/files/17336629584.pdfIn PDF document text
- https://ladangmimpi2.com/contents/files/51996702291.pdfIn PDF document text
- https://gres-k.cat/userfiles/file/24495760998.pdfIn PDF document text
- https://icnj.net/ckeditor/ckfinder/userfiles/files/tudusikojiritojivomalo.pdfIn PDF document text
- https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/c0c96fa212ce3c6e9536acc1b5a5738f/86917763955.pdfIn PDF document text
- http://chinajessie.com/seadata/data/uploads/img/file/163082141292.pdfIn PDF document text
- https://stayinbranson.com/ckfinder/triplebuserfiles/file/xuvagofixixozubu.pdfIn PDF document text
- http://bargiel.com.pl/ckfinder/userfiles/files/jawatugijebogufajinen.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_off0000be58.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE58 | 18036 bytes |
SHA-256: 232eb93ae2801506c85f40fcdb8293cdf21398f3e19e48f9bb455e73ea6fdc70 |
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font_01_sfnt_off0000ec78.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC78 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001048f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1048F | 10948 bytes |
SHA-256: 530a678b3fd2c05750ec9954224eb1b10078a2decb82ac27ca5c8db4ce0e0f6d |
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