MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm with numerous external URLs, many hosted on compromised or disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of multiple external links points to an attempt to redirect the user to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://sicompk.com/survey/userfiles/files/nenefogiguw.pdf In PDF document text
- http://tydafa.com/dafa/uploadfiles/20210906161004.pdfIn PDF document text
- http://elai.kz/upload/2021/09files/2109200459592171879183r.pdfIn PDF document text
- http://straps.by/ckfinder/userfiles/files/45277684199.pdfIn PDF document text
- http://yonezawanet.jp/units/24250/zcycom/files/21716618541.pdfIn PDF document text
- https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/nnrudt3515d3csqmep1a585264/depevibixiwi.pdfIn PDF document text
- http://grandviewgroupresort.com/upload/files/buwarudetuvaloz.pdfIn PDF document text
- https://charming-dc.com/uploads/files/202109160618122363.pdfIn PDF document text
- http://www.tobywells.org/media/fckdir/file/52700806259.pdfIn PDF document text
- http://canadanur.com/resimler/files/64599184148.pdfIn PDF document text
- https://stef-nancy.fr/upload/document/71563166026.pdfIn PDF document text
- http://ip-malkov.ru/uploads/files/fatabanuxudikutibonogonor.pdfIn PDF document text
- http://russia-ex.com/images/blog/file/50191309812.pdfIn PDF document text
- https://ewastexperts.com/userfiles/files/zulof.pdfIn PDF document text
- http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/60e8a67ad7fab301bc8c93e38818a1bd/rodefuwuvidu.pdfIn PDF document text
- http://intertribo.sk/files/jagobalobepin.pdfIn PDF document text
- http://bud-drog.pl/userfiles/file/pulemarigiloje.pdfIn PDF document text
- http://guss-ex.de/uploads/fck/file/1411311604.pdfIn PDF document text
- http://veterina-naslunci.cz/userfiles/file/41897999260.pdfIn PDF document text
- http://paddockj.com/user_data/editor/ckfinder/core/connector/php/upload/files/xojerijogedutegutuxew.pdfIn PDF document text
- http://xn--e1aaafipco3bk8gra3b.xn--p1ai/upload_picture/file/21778155020.pdfIn PDF document text
- http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ff487c2538---40334981400.pdfIn PDF document text
- http://s2ipower.com/survey/userfiles/files/dakaz.pdfIn PDF document text
- http://interreg-ipa-husrb.com/downloads/samasumadofili.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=7+letter+word+starting+with+b+ending+with+ePDF 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_off0000b30a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB30A | 16440 bytes |
SHA-256: e53175715a4299d5dfe6eb954d03d70d433a60a834cfede545beac13539080af |
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font_01_sfnt_off0000dcdc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCDC | 10704 bytes |
SHA-256: 1c5cfecc50ca33e5fdc06fc4d86acc036b1acc7d81223cff3f853df9e080058f |
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font_02_sfnt_off0000f537.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF537 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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