MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, with numerous URLs pointing to potentially compromised websites and disposable hosting, designed to redirect users to further malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics confirms this behavior.
Machine Learning
- Nyx PDF Classifier malicious score 0.9905
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 http://ahdongjiu.com/upload_fck/file/2021-5-19/20210519010739143497.pdf In PDF document text
- https://xn--80aanugxqi.xn--p1ai/admin/ckfinder/userfiles/files/wiradibizifavu.pdfIn PDF document text
- https://nepaltrekkinginhimalaya.com/assets/userfiles/files/newoxegewixokufofakux.pdfIn PDF document text
- http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608275f9aacac---5640036029.pdfIn PDF document text
- https://riosemarescentrodemergulho.com/ckfinder/files/50771886630.pdfIn PDF document text
- http://wooshin.kr/uploaded/file/10517198686127542bdfd5f.pdfIn PDF document text
- https://stalbeckers.nl/userfiles/image/file/pevinezutagok.pdfIn PDF document text
- https://kvkumariajnkvv.org/singhania/downloads/file/sijitetumuneminalun.pdfIn PDF document text
- http://yjccnc.com/upload/files/92279550424.pdfIn PDF document text
- http://gentlemensquartersbarbershop.com/wp-content/plugins/super-forms/uploads/php/files/e940781404558ce255cc33030eeafd77/39472915619.pdfIn PDF document text
- https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/474c782ba1f973da055a0e3e3875c85a/lavixozumitadojagolaka.pdfIn PDF document text
- http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160f05020416ff---23983471272.pdfIn PDF document text
- http://geasit.it/userfiles/files/linufepuvepovakezipoxo.pdfIn PDF document text
- http://world-housing.jp/ckfinder/userfiles/files/39783844506.pdfIn PDF document text
- https://fallsplat.se/bildbank/file/tewisowiwuderutuxenugif.pdfIn PDF document text
- https://alshuka.ps/ckfinder/userfiles/files/77613636254.pdfIn PDF document text
- http://szentdorottyapatika.hu/files/13424747745.pdfIn PDF document text
- http://asea-admin.com/_userfiles/file/20210502115929.pdfIn PDF document text
- http://all-premium.com/user_file/files/29994081290.pdfIn PDF document text
- http://szwygs.com/upload/gotaferuxalolemegeludapu.pdfIn PDF document text
- https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/7p3vfknq9oaqtm7kteount1kcv/babapozuwiwokipo.pdfIn PDF document text
- http://stefani.cz/fck/file/bototudur.pdfIn PDF document text
- https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/97fcbabe4f187a42685fed5165b0a499/duwonafupefi.pdfIn PDF document text
- http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608670da1bed1---sawisitafajelasitixuneved.pdfIn PDF document text
- http://lawyermo.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/ropogelisizenamene.pdfIn PDF document text
- https://agentcctv.com/userfiles/file/muzumobutepujorufojifebud.pdfIn PDF document text
- https://lastcallslc.com/wp-content/plugins/super-forms/uploads/php/files/ae6412c30b077aa8dcb81502a547c47b/4065995339.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=thorax+anatomy+pdf+downloadPDF 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_off0000e686.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE686 | 10636 bytes |
SHA-256: 6acac9ef548ee299c0991205448756102bde125e5bace1d0bfb1fda7fcd6259c |
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font_01_sfnt_off0000febf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEBF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000116d1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x116D1 | 17648 bytes |
SHA-256: 4f1f9313a3dae76b668e7efe141035bbe5cc276ef5f00267b2b3967ebd96af11 |
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