MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs pointing to various domains, indicating a link farm designed to redirect users. Heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly suggest a phishing or malware distribution scheme. The ML classifier and ClamAV detection further confirm its malicious nature, likely involving the exploitation of PDF vulnerabilities or social engineering.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://coretry.ru/uplcv?utm_term=attack+on+titan+assault+android PDF link annotation
- http://gpkoaee.ru/ckfinder/userfiles/files/99740292523.pdfIn PDF document text
- http://fszhenjia.com/upfolder/e/files/20210911101648.pdfIn PDF document text
- https://hlj-vibration.com/uploads/image/20210904/files/20210904040725.pdfIn PDF document text
- http://marcth.pl/media/fck/file/68122720685.pdfIn PDF document text
- http://klawiatury-foliowe.pl/_data/file/93838263164.pdfIn PDF document text
- https://gamma-electronics-eg.com/userfiles/files/xatedejab.pdfIn PDF document text
- http://saraswatishikshamandir.com/singhania/downloads/file/1603355912.pdfIn PDF document text
- http://1utilaje.ro/mm/file/zavesip.pdfIn PDF document text
- http://shannonlakeestates.org/fck_images/file/72651105423.pdfIn PDF document text
- http://www.barbazan-debat.fr/ckfinder/userfiles/files/gejimu.pdfIn PDF document text
- https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fb155e2f12---33837826988.pdfIn PDF document text
- http://kientrucphatloc.com/upload/files/zaveg.pdfIn PDF document text
- http://stadtbild-intervention.de/Quansis/ckfinder/userfiles/files/sexisanasavutamowika.pdfIn PDF document text
- https://doan295doson.vn/namthuan/images/news/files/28051755893.pdfIn PDF document text
- https://lanjutpt1.com/contents/files/23087931254.pdfIn PDF document text
- http://hyunbulsa.org/~ewedd2/userfiles/file/gumuxesumojirabegogadu.pdfIn PDF document text
- http://mardeestilos.es/fotos/file/59858869069.pdfIn PDF document text
- http://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613c9f5954618---57856297306.pdfIn PDF document text
- http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613448983cefc---dutefufanaxog.pdfIn PDF document text
- http://studioambienteterritorio.it/userfiles/files/ruzinepiletudejokaxop.pdfIn PDF document text
- http://robwalker.net/fckupload/file/11390837268.pdfIn PDF document text
- http://ettorebelfioreliutaio.it/userfiles/files/belezalisedozawodujuloz.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_off0000de81.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE81 | 10404 bytes |
SHA-256: ce6e52232f6f6d550f256ca2e777d189d707831ea50fef2a9447d50c7fad16fb |
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font_01_sfnt_off0000f63c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF63C | 19176 bytes |
SHA-256: 37b3e280165b3f68419aa8210aed041c8e981c25f889e0155f42800580f2809b |
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font_02_sfnt_off00012772.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12772 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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