MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users. The presence of these links and the overall detection indicate a likely attempt to lure users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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://wastran.ru/uplcv?utm_term=difficult+lewis+structure+practice PDF link annotation
- https://khotelmarket.com/FileData/ckfinder/files/20210929_66FC9CE98F4801FE.pdfIn PDF document text
- http://dajia1.com/upfiles/editor/files/vemexizikixogewifu.pdfIn PDF document text
- http://physocare.com/Images_upload/files/35962015912.pdfIn PDF document text
- http://thepnguyentran.vn/media/ftp/file/17713708718.pdfIn PDF document text
- http://shiraz.sk/ckfinder/userfiles/files/lananiwuvoge.pdfIn PDF document text
- https://sukienmiennam.com/userupload/files/80420791974.pdfIn PDF document text
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/577cce6426e2f917568878b9c07e78f8/tonedegakunelapemup.pdfIn PDF document text
- https://cemb.ca/upload/editor/file/4084503052.pdfIn PDF document text
- http://dwornawodzie.pl/userfiles/file/95412495790.pdfIn PDF document text
- http://vigen12.com/userfiles/file/lirizalexaf.pdfIn PDF document text
- https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/16151203850a18---lizixet.pdfIn PDF document text
- http://michalpavlicek.com/uploaded/file/54585947805.pdfIn PDF document text
- http://eggtesting.com/admin/uploads/file/dikige.pdfIn PDF document text
- http://vandofigueiredo.com/userfiles/file///96383767251.pdfIn PDF document text
- https://centaur.vri.cz/docs/files/jafetevi.pdfIn PDF document text
- http://cka-shiba.com/ckfinder/userfiles/files/32908851209.pdfIn PDF document text
- http://geteffective.biz/uploadfiles/file/48033892018.pdfIn PDF document text
- http://podolsk-kondicionery.ru/upload_picture/file/28264102959.pdfIn PDF document text
- http://vasekurzy.cz/userfiles/file/butezojarurub.pdfIn PDF document text
- https://blokhol.com/upload/files/19767570305.pdfIn PDF document text
- http://pololanna.com/user_img/files/zezufagesepili.pdfIn PDF document text
- https://goldengatetaichiqigong.com/userfiles/file/46484470585.pdfIn PDF document text
- https://avukat.kocgrafik.net/upload/files/wudimutos.pdfIn PDF document text
- https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/3hd8iu209sc3f6fo61kp65t5it/lijixoxiwil.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_off0000c19b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC19B | 18856 bytes |
SHA-256: 41d79c7a1c4569c886cffee244e4900578dd1e3c3a770ac44c83135f98ffd8b7 |
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font_01_sfnt_off0000f25f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF25F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010a76.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A76 | 10436 bytes |
SHA-256: 63cf587ac05a349f3ecd920621fba44897bb39cdcef56152cef181f28e2dbb2c |
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