MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised WordPress upload storage and disposable hosting, suggesting a phishing or malware distribution lure. The embedded URLs, such as 'https://pistant.ru/uplcv?utm_term=earn+robux+by+watching+ads+2021', are likely used to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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://pistant.ru/uplcv?utm_term=earn+robux+by+watching+ads+2021 PDF link annotation
- https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613a0753ce24f---jetozowawedavo.pdfIn PDF document text
- http://hart-metale.pl/gimnazjum/userfiles/file/98312500813.pdfIn PDF document text
- http://9y.bfage.com/upload/files/20210908182423.pdfIn PDF document text
- http://rhondachem.com/d/files/24868707801.pdfIn PDF document text
- http://wasserburg.pl/userfiles/file/visofaribewiniputipe.pdfIn PDF document text
- https://rotterdampools.com/contents/files/97667746994.pdfIn PDF document text
- http://metallpress.ru/files/24033274293.pdfIn PDF document text
- https://sentinels.ro/userfiles/file/fubirajabamosoweb.pdfIn PDF document text
- http://ttlh.vn/storage/ckfinder/files/11680762080.pdfIn PDF document text
- http://mikllc.mn/uploads/files/dugatudejesigixug.pdfIn PDF document text
- http://comlark.ru/userfiles/files/joxolemu.pdfIn PDF document text
- http://norrlandet.se/userfiles/file/25017451394.pdfIn PDF document text
- http://lmnn.ru/userfiles/file/98408835157.pdfIn PDF document text
- http://dongzzang.com/userfiles/file///biwasaset.pdfIn PDF document text
- http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1613612aa3a6de---dujejajozoxivux.pdfIn PDF document text
- http://vendsol.com/userfiles/file/xemuw.pdfIn PDF document text
- http://lycee-elm.info/userfiles/file/29779676571.pdfIn PDF document text
- http://turar-mussin.com/userfiles/File/sivujutes.pdfIn PDF document text
- http://conomiya.com/images/uploadedimages/file/77945835273.pdfIn PDF document text
- https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131d464e934d---jenejabegetotawikakod.pdfIn PDF document text
- https://www.khaosanpools.org/ckfinder/userfiles/files/70786898281.pdfIn PDF document text
- http://vertracapital.com/uploads/files/18917399510.pdfIn PDF document text
- http://precisionsurgicalworks.com/alpha/ckfinder/userfiles/files/sokutero.pdfIn PDF document text
- http://barefoot.pl/userfiles/file/42353467461.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_off0000cc4b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC4B | 17864 bytes |
SHA-256: c349014fe8fef6e0ad53be6f88dc5db987a16bbcf7e3144c1d59adc4beab47e1 |
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font_01_sfnt_off0000faee.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFAEE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011305.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11305 | 11292 bytes |
SHA-256: 9c366908a47ca5451d7b76d6da6879f0c56edf6c3e5b175e757c442284cabf93 |
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