MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics indicate it functions as a link farm, directing users to multiple external websites, some hosted on compromised WordPress installations. The presence of numerous URLs, including one with a 'utm_term' parameter suggesting search engine optimization for malicious purposes, points towards a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://catamma.ru/uplcv?utm_term=x+vpn+for+pc+free+download+windows+10 PDF link annotation
- https://ww150008.linebot.net/upfile/files/20211002180433.pdfIn PDF document text
- https://eastmanllc.net/ckfinder/userfiles/files/36890990557.pdfIn PDF document text
- https://bikeid.net/ckfinder/userfiles/files/xoresazoralimozo.pdfIn PDF document text
- http://avs-market.ru/admin/ckfinder/userfiles/files/19243050204.pdfIn PDF document text
- http://revize-elektro.info/UserFiles/File/21681005175.pdfIn PDF document text
- https://kebecelectrique.com/upload/editor/file/67867173784.pdfIn PDF document text
- http://123flower.doweb.kr/upload/files/83570362728.pdfIn PDF document text
- http://chroscina.com/userfiles/file/lepufekaxekemotunirobuwe.pdfIn PDF document text
- http://vdadanang.vn/app/webroot/assets/files/56392132008.pdfIn PDF document text
- https://dom4m.by/userfiles/files/nilepumetezixa.pdfIn PDF document text
- http://youzedu.com/ckimages/files/20211007042814501248.pdfIn PDF document text
- https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/161388b1eb9bae---88252777421.pdfIn PDF document text
- http://debschoen.com/userfiles/file/16700135265.pdfIn PDF document text
- https://www.bnbtravels.com/ckfinder/userfiles/files/gefewusiwezulapup.pdfIn PDF document text
- https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/4fis3rkeg7bo9qad35f4upod2q/84658857555.pdfIn PDF document text
- https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161411b4ef16d8---80449219486.pdfIn PDF document text
- http://copingconversations.com/userfiles/file/deseduvita.pdfIn PDF document text
- https://pamukoglu.com/userfiles/file/duvigorazadevesefefe.pdfIn PDF document text
- https://quatcongnghieput.com/uploads/files/97041167202.pdfIn PDF document text
- http://opuspoint.com/ckfinder/userfiles/files/44248644850.pdfIn PDF document text
- http://ms-beauty.com/ckfinder/userfiles/files/bewawisaw.pdfIn PDF document text
- http://ty6600.com/userfiles/file/98913056597.pdfIn PDF document text
- http://arcenevents.nl/site/upload/files/82777230913.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_off0000bde9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBDE9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d5fb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5FB | 16732 bytes |
SHA-256: aa64b59628e96fafc9642c8aee3fdd20f663fdf99a973cd20a3347e5fcfd8827 |
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font_02_sfnt_off00010082.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10082 | 10848 bytes |
SHA-256: 04db8f0e96a3692af5350a7b50dfdbd40b1730a2831cb944f45c51c7f2df8e94 |
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