MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of multiple distinct hosts and a high number of links per host indicates a coordinated effort to distribute malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://jatyn.cn/upfiles/202105/file/1621690213.pdf
- http://valaptop.com/ImagesVA/file/29417056597.pdf
- https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/a8896jd9r331ut3fir61h5n92i/tikopibunakixukupuwiz.pdf
- http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608aa02fe469f---73542659894.pdf
- https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae7ddbd39b1---93836968971.pdf
- https://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/faeeb03f306445270deb68dfe03b6ccb/vubabat.pdf
- http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160d8b07fd211c---nugomegolenivenejo.pdf
- http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160815f2a25877---33597332949.pdf
- http://lpkgoodframeupvc.com/userfiles/files/jezabawofuvatinedutemuzal.pdf
- http://diodelumi.com/ckfinder/userfiles/files/remozaxozowenex.pdf
- https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/vhbvjkdi8hvji4hecvgeb2jpk2/67195562817.pdf
- https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/f3f792fd2121a226d167300738aa6ae7/72252178631.pdf
- http://zabradli-znerezu.cz/userfiles/file/gizakutekasewaretugekel.pdf
- https://nolimitscenter.be/peausitive/images/FCKeditor/file/vefogikaguwowem.pdf
- https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/3ff1bdbf5c76f4fdb043a53a8193fccb/nefutugudoru.pdf
- http://tourbusan.net/FileData/ckfinder/files/20210626_CE84DEC0FE6F9125.pdf
- http://ohappy.org/userData/board/file/49528718048.pdf
- http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160985fab22154---kopajikodilisesevosiwipa.pdf
- https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa98e17c892---52756764760.pdf
- http://nwatchonline.org/userfiles/file/59925131155.pdf
- http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/16076042244ddf---nofavisuf.pdf
- http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/cd543cd4de2647b475f9a66421ba7a59/3550150628.pdf
- https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2580fdd981---xolorevizumedawafesexav.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=gta+5+how+to+sell+cars+from+garage
- 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_off0000bba8.binc1b33e44c8c07ddb3a664be83825dec3171ae12e9cfe644940c537927e9d6eed |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBBA8 | 15808 bytes |
font_01_sfnt_off0000e46c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE46C | 16792 bytes |
font_02_sfnt_off0000fc83.bina44768cb7c74fe451a706b5c39bf33bc8e0b833722ccd126f617299c98e59157 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC83 | 10844 bytes |
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