MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was flagged by a machine learning classifier and ClamAV as malicious. It contains numerous external links, many of which point to compromised websites or disposable hosting, suggesting a link farm or phishing lure. The PDF structure and embedded URIs indicate an attempt to redirect the user to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://mkontakt.pl/dat/file/kubupumuwuwipilexasa.pdf In PDF document text
- https://heatingboiler.ca/fck_upload/file/77176416077.pdfIn PDF document text
- https://xn--z4qq44i.tw/upload/actfiles/gumesije.pdfIn PDF document text
- https://asfus.net/virgsurv/userfiles/file/38322703234.pdfIn PDF document text
- http://ebara.com.hk/ckfinder/Zenith/userfiles/files/86796013163.pdfIn PDF document text
- http://paradisetourkorea.com/FileData/ckfinder/files/20210910_9BADAD9E2733C5E1.pdfIn PDF document text
- https://bike-accessories.supersites.gr/content/ckfinder/files/kiwixetumafawuni.pdfIn PDF document text
- https://jbdclothiers.net/emailer/userfiles/file/27255754585.pdfIn PDF document text
- http://ryyw.com/upload/files/2021/09/202109230716549809.pdfIn PDF document text
- https://mobilaide.com/upload/editor/file/xalabaga.pdfIn PDF document text
- https://themodernla.com/wp-content/plugins/super-forms/uploads/php/files/b3b97616c0829def5a1aa6bc78de3e8c/42137735933.pdfIn PDF document text
- https://worldcastlive.com/userfiles/file/25071216759.pdfIn PDF document text
- http://sunwisechem.com/Uploadfiles/files/vixarafazerozor.pdfIn PDF document text
- http://santabruna.cl/upload/file/manirevowekiluxufiv.pdfIn PDF document text
- https://steammining.com/userfiles/file/zovanadubigesabewen.pdfIn PDF document text
- http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16134075c37852---5868899768.pdfIn PDF document text
- http://bighost.vn/uploads/userfiles/file/21841245529.pdfIn PDF document text
- https://terracell.pt/images/file/rakunate.pdfIn PDF document text
- https://neksav.com/upload/ckfinder/files/30547730879.pdfIn PDF document text
- http://cascad-trans.ru/files/bubovimetuwuz.pdfIn PDF document text
- https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/90a4f2b8f116b7017a51aa5786a61e2d/finibojerox.pdfIn PDF document text
- http://nanouklid.cz/upload/file/kudoxino.pdfIn PDF document text
- https://www.hosotte.com/ckfinder/userfiles/files/jafebavupeduvuzuwa.pdfIn PDF document text
- https://www.auto-ecole-rive-droite.fr/ckfinder/userfiles/files/bukoka.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=developing+the+leader+within+you+free+pdfPDF link annotation
- 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_off0000af1e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAF1E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c735.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC735 | 10976 bytes |
SHA-256: 243a68938af43b7b0ccc7d7c3647bf4eb2e900b333fe57438ed10fa9698edd9d |
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font_02_sfnt_off0000e070.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE070 | 15248 bytes |
SHA-256: 33d2f54d5532671682c2a95e419758504a2d75cf75f5671fa2c6012dfbd6c60b |
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