MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URLs, many hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed to redirect users. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' reinforces the conclusion that this document is part of a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
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 https://catamma.ru/uplcv?utm_term=data+analysis+excel+2013+pdf PDF link annotation
- https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/6cbdcbd6797762f79fff9e000c083483/vobajodumesefukifas.pdfIn PDF document text
- http://bigband-ulm.de/userfiles/files/mozebugag.pdfIn PDF document text
- http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a318f519d7e---83997722718.pdfIn PDF document text
- https://radiosmile.hu/upload/file/42683413522.pdfIn PDF document text
- https://yp05.com/_UploadFile/Images/file/3337711076.pdfIn PDF document text
- http://cheers-gifts.com/userfiles/zitogosaku.pdfIn PDF document text
- http://formpart.com/upload/ckfinder/files/55086076275.pdfIn PDF document text
- https://reparation-mobile.net/userfiles/file/94978081135.pdfIn PDF document text
- http://smsgurugram.com/miet/assets/files/58982326774.pdfIn PDF document text
- http://pytextiles.com/userfiles/file/zogufujaguverixefobifu.pdfIn PDF document text
- http://sysquare.com/UserFiles/files/rarowoxepinufet.pdfIn PDF document text
- http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d20d8d5fac---55709835522.pdfIn PDF document text
- https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/c8617bf629e42634fbddf48c17958313/kuleda.pdfIn PDF document text
- https://ijtm.in/userfiles/file/51824345816.pdfIn PDF document text
- http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3a63e237d1---57435657245.pdfIn PDF document text
- http://posekatzahradu.cz/files/file/15777026747.pdfIn PDF document text
- https://atphp.ch/userfiles/file/75623131026.pdfIn PDF document text
- http://bradzo-ep.com/uploads/files/lunaxawat.pdfIn PDF document text
- https://cristalparkhotel.com.ve/ckfinder/userfiles/files/xofirodelorukitutawiru.pdfIn PDF document text
- https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160722c923c052---21556395996.pdfIn PDF document text
- http://vietthanhstone.com/images/news/file/41799704792.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_off0000dcab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCAB | 16928 bytes |
SHA-256: c0549316341a316cd6dca8d544cdb1b449672c4e9c0389979e7ab6061cffacf1 |
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font_01_sfnt_off00010904.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10904 | 11076 bytes |
SHA-256: 6b17a1034a0d2d0d0a8ec988a7ee204a785bee02cd039615cbfdd2b73c345c38 |
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font_02_sfnt_off00012328.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12328 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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