MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to numerous external URLs, many of which are hosted on compromised or disposable domains. The presence of 'utm_term' parameters suggests a potential SEO-based lure to attract unsuspecting users to these malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9970
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://archism.ru/uplcv?utm_term=best+collage+maker+app+for+pc PDF link annotation
- http://tamker.hu/userfiles/file/34698808252.pdfIn PDF document text
- https://wonkingchina.com/d/files/pubulureziwitomalap.pdfIn PDF document text
- http://optykglowacki.pl/obrazki/files/dofexosowunis.pdfIn PDF document text
- https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/o248gkdbn638glpsaiku6isth3/49933441699.pdfIn PDF document text
- http://abwingsde.com/uploads/files/wobeguxipufepejigavugipen.pdfIn PDF document text
- http://pvvc.cz/files/tavukefapuw.pdfIn PDF document text
- http://morecoredesign.com/images/imageUps/files/rejaxurafu.pdfIn PDF document text
- https://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/tsh5pmkl5h7rk8gbh4r2g48824/41548092571.pdfIn PDF document text
- https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161327787668d0---52517215009.pdfIn PDF document text
- http://premiumcsp.com/uploads/files/sogukonilomobojexa.pdfIn PDF document text
- http://maasmartcity.com/userfiles/file/zokasetitosogosuwizaduti.pdfIn PDF document text
- http://profil-metall.de/content/uploads/file/lugibexomej.pdfIn PDF document text
- https://interference.ajoda.eu/userfiles/files/setagobameraziwowanute.pdfIn PDF document text
- http://japan-railpass.info/images/blog/file/97491388692.pdfIn PDF document text
- http://aiaato.com/FileData/ckfinder/files/20210909_4ECCA566178954B2.pdfIn PDF document text
- https://holocaustresearch.pl/nowy/photo/file/bibav.pdfIn PDF document text
- http://interface-referencement.com/userfiles/file/livelivexi.pdfIn PDF document text
- https://jin-ji.com/upload/files/fiwuwumoputotevonuwanuwi.pdfIn PDF document text
- http://zajazd-broadway.pl/galeria/file/wosexojuzagulebinipo.pdfIn PDF document text
- http://inannamsao.com/uploads/files/lupepujevovawibegalib.pdfIn PDF document text
- https://fiberglasssupplydepot.com/userfiles/file/56402506728.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_off0000e4c5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4C5 | 17484 bytes |
SHA-256: a38197faaa7c41a784a1fb889a5102c073ed4b2f832d28038466b35be4636a31 |
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font_01_sfnt_off00011235.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11235 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012a4c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A4C | 10772 bytes |
SHA-256: 6e26abf9638dd283c78cccbd27b4d6d23438dd0bd4ce6db36f880c8f5e746551 |
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