MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous embedded URLs pointing to compromised WordPress sites and disposable domains, suggesting an attempt to lure users to malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9849
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://infrive.ru/uplcv?utm_term=iphone+8+plus+price+in+bd
- https://123natura.com/stockages/files/97423181818.pdf
- https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/4tbt71md3redvt4dvsfa0cbpph/80627739844.pdf
- https://radmangroup-ye.com/rgfiles/file/51907401529.pdf
- http://sake2metustin.com/uploads/files/42680686347.pdf
- http://modernplating.com/userfiles/file/negejanuwogetuzugibixotu.pdf
- http://www.valathors.com/ckfinder/userfiles/files/zovadenuviguna.pdf
- https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/3db166a90011a9fd33bb21dcad4a77bd/vinebematami.pdf
- https://paeonia.ch/userfiles/files/6923223682.pdf
- http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161350ca5c5080---30640434214.pdf
- http://baldonimarcostudio.eu/userfiles/files/budotogakiwasizitizuke.pdf
- http://hangnhatbanonline.com/upload/files/jexadezazegemapiwuli.pdf
- http://erictex.com/ufiles/files/zumasuzusofu.pdf
- http://vning.net/filespath/files/20210915110851.pdf
- http://nenkin-t.com/upload_img/ck/files/dulezatene.pdf
- http://studiotecnicodama.it/userfiles/files/27209378668.pdf
- http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/161440b7de3773---86535965388.pdf
- http://haciogullari.com/depo/sayfaresim/file/rubarudowoxukobapexoz.pdf
- http://shtaket46.ru/page_edit/_samples/userfiles/files/30493732633.pdf
- http://www.elstar.ru/uploads/files/bojigatarevuriliwapofebuv.pdf
- http://tivati.com/uploads/userfiles/file/zokolakapuwitum.pdf
- https://www.alapan.org/fckimages/file/diwonutivisozeweteg.pdf
- http://www.elstar.ru/uploads/files/dutosi.pdf
- https://stka.gr/ckfinder/userfiles/files/xazevedo.pdf
- https://kclandscapes.com/ckfinder/triplebuserfiles/file/rewopopavajilusi.pdf
- http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/1llths98767mhsuoldk6q0ls5d/56586838268.pdf
- http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16138d3be17ec6---joguxutolituwinekerego.pdf
- https://www.frontieregypt.com/sites/all/libraries/ckfinder/userfiles/files/tilelozajazijodu.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e631.bin438184a88cbb13ccdb277abd92f70accc85c188ecc3f23d4968c5714dcf6965c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE631 | 10748 bytes |
font_01_sfnt_off0000fe90.bin3bd4f0ea06fe17738663ef375c7de3e80e1e73072798fb7e50ac25f9000181f6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE90 | 19160 bytes |
font_02_sfnt_off000130f1.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x130F1 | 16792 bytes |
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