MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload directories, indicating a link farm designed to redirect users. Heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly suggest this malicious intent. ClamAV detection further confirms its malicious nature, classifying it as a phishing trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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 http://anhuishangbiao.com/upload_fck/file/2021-9-3/20210903044725237008.pdf In PDF document text
- https://claudiodituri.it/uploads/99557763284.pdfIn PDF document text
- http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a73325aa55---dizenamedufitisuxo.pdfIn PDF document text
- http://www.atsamuihaus.com/image/upload/File/tawebadusigis.pdfIn PDF document text
- http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138fd74653ba---5877027609.pdfIn PDF document text
- http://pooq-design.com/app/webroot/fckfiles/file/wugilotometuna.pdfIn PDF document text
- https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/161343d4660500---67044252117.pdfIn PDF document text
- https://www.mmgrowersg.com/ckfinder/userfiles/files/68904339934.pdfIn PDF document text
- http://kstarsmall.net/userfiles/file///waxovoduxuxipigubilored.pdfIn PDF document text
- http://ablerexthailand.com/userfiles/files/47454756994.pdfIn PDF document text
- http://goforthegreengolfpools.com/userfiles/file/46485312576.pdfIn PDF document text
- http://hooleihomes.com/cms_images/file/7077918558.pdfIn PDF document text
- https://tungafilm.com/dorceiys/ckfinder/userfiles/files/masaninefefeditenape.pdfIn PDF document text
- http://hoteldanang.com/uploads/images/files/96815125101.pdfIn PDF document text
- https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/irbdb9knm65nj9v3fafh3505r0/tawexuxuralixobiragomi.pdfIn PDF document text
- https://cardolf.ro/files/85896819072.pdfIn PDF document text
- http://tns-china.cn/editor_upload_image/file/kemavesirekedujirowudunip.pdfIn PDF document text
- https://questyme.com/userfiles/file/fepinofuzusuwejasurapimo.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=sketch+drawing+app+androidPDF link annotation
- 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_off0000d603.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD603 | 18120 bytes |
SHA-256: 2d2c3f95dfd67b05609e9b55bc36cea1641e029563ea1085ea2183e743baa7ea |
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font_01_sfnt_off0001056e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1056E | 10832 bytes |
SHA-256: 0f3b9dc2e8b0729c97f8283a4f99de7c2e4c8fd4aae31a6e3584884b12937f8d |
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font_02_sfnt_off00011e45.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E45 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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