MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external websites, many of which are hosted on compromised or disposable domains, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or delivering a secondary payload. No scripts were extracted, but the PDF structure and URL analysis point to a malicious link farm.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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=sample+cover+letter+for+report+submission
- https://iasvn.org/Images_upload/files/titobapewawosixipo.pdf
- http://tnslib.su/userfiles/files/rujurezabu.pdf
- http://gccde.com/downloads/blog/geust/files/watoxipokujinuxoliponev.pdf
- http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f79ae59ac2---pisupogukivo.pdf
- http://scbczy.cn/up_files/file/20210915_085336.pdf
- https://windfreeklima.com/upload/ckfinder/files/6943746914.pdf
- http://antichigelsi.it/userfiles/files/pikeridibi.pdf
- http://dabaizhongxue.com/upload_fck/file/2021-9-7/20210907204656410520.pdf
- https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/eddf1dfd6ca03a7ce6f95b1262aa36dd/gebojipuworuvu.pdf
- https://chennothinterios.com/uploads/file/12658460505.pdf
- https://fo-prefectures.com/pages/files/waditikukipa.pdf
- http://ptsound.com/plugins/ckfinder/userfiles/files/14046309225.pdf
- http://idrogastermoclima.it/Utentifile/FCKPage/file/33857598657.pdf
- http://jiangsutravel.kr/userfiles/files/20210910_190233.pdf
- http://pegasomeeting.medcoast.net/ckfinder/userfiles/files/dubegi.pdf
- http://giasuminhtam.com/Images_upload/files/munesezag.pdf
- https://activepymes.com/pub/file/40644070820.pdf
- http://hosteleriayvending.com/ckfinder/userfiles/files/komatijores.pdf
- http://mayphotocopydogia.com/upload/files/zuwozisoxeziripot.pdf
- https://prana.video/wp-content/plugins/super-forms/uploads/php/files/ked3300348i4aidp2aho4n1d8u/palevubugenajuxiwawe.pdf
- https://doluhosting.com/calisma2/files/uploads/45955699989.pdf
- https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/86b99b577c78b565976a36ed07eac6ea/72932761155.pdf
- https://vildmarksjagt.dk/userfiles/file/kinigeniresosibolosiga.pdf
- https://projetovm.com/uploads/files/8480902249.pdf
- https://drhuanghair.com/uploads/files/202109160252165222.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dad7.bin32124a5dd0e5b3599c47916dd8c8588af79f12809c51967d8acd99712b38a859 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDAD7 | 17988 bytes |
font_01_sfnt_off0001091a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1091A | 16792 bytes |
font_02_sfnt_off00012131.bincadcc6b7ffa628a7af70c0d0f425f78823ef5eee03ed8f7e096c4c9bec0a7741 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12131 | 11020 bytes |
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