MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, with numerous embedded URLs pointing to PDF files hosted on various domains, some of which appear to be compromised WordPress sites. The `utm_term` parameter in one URL suggests a potential phishing lure, aiming to trick users into clicking malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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=need+for+speed+underground+2+ios PDF link annotation
- http://vnndt.com/Images_upload/files/tosaguziwedevukapobu.pdfIn PDF document text
- http://cngwalk.com/fckeditor/userfiles/image/biselafagotarabibokaguxu.pdfIn PDF document text
- https://soalmatematik.com/userfiles/file/52059670323.pdfIn PDF document text
- https://venefoil.com/ckfinder/userfiles/files/7386399849.pdfIn PDF document text
- https://f27szerviz.hu/upload/files/28296065106.pdfIn PDF document text
- http://www.dogwoodagility.nl/ckfinder/userfiles/files/salitavuramofunogedufu.pdfIn PDF document text
- http://ccsctda.com/ckfinder/userfiles/files/20210919_100639.pdfIn PDF document text
- http://ahzgbh.news-read.com/upload/files/83491198591.pdfIn PDF document text
- http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/tin2hf32670flsbs2p95gjpvgm/46758353192.pdfIn PDF document text
- http://consulcongress.it/uploads/assets/file/jozefugirub.pdfIn PDF document text
- https://thanaclusterwestgate.leaddeehub.com/userfiles/files/vonidibapikazo.pdfIn PDF document text
- http://onfireinteriors.com/userfiles/1924674437.pdfIn PDF document text
- http://centrons.com/uploaded/file/44657653561533d9908ace.pdfIn PDF document text
- http://szolnokepul.hu/userfiles/file/66006730712.pdfIn PDF document text
- http://oa30us.com/userfiles/file/tejajanifosuturi.pdfIn PDF document text
- https://kenhquangcao.vn/uploads/files/39646600433.pdfIn PDF document text
- http://articolo17.it/siti/usr/foto/files/92370429485.pdfIn PDF document text
- https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/1613a06416a456---23904378474.pdfIn PDF document text
- https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d0022d572f---77024654083.pdfIn PDF document text
- http://coimbra.hu/uploads/ckfinder/userfiles/files/jisogedubamafeje.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_off0000ad62.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAD62 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c574.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC574 | 16000 bytes |
SHA-256: 77a4633e645e5b5e711a04e9311da1f10d5c0c109e40c2877fde6a5bdee6e324 |
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font_02_sfnt_off0000ee2a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE2A | 10564 bytes |
SHA-256: 6043385466d7ab48909c6053bfeb83f3eebdb98e2389ea9883ce9090fe7a4412 |
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