MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress upload directories, suggesting a link farm designed to redirect users to malicious sites. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, providing no direct user-facing content but containing embedded URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9929
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 http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d1c16f46302---77430694838.pdf In PDF document text
- http://aksaaydinlatma.com/img/editor/image/file/lamatuxekakep.pdfIn PDF document text
- https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/ead5f2a2074ef546faae99fb979d1562/22661701467.pdfIn PDF document text
- http://instandee.com/Images_upload/files/tegub.pdfIn PDF document text
- http://land89.com/ckupload/files/65293123196.pdfIn PDF document text
- https://fishboat.hr/files/5664477983.pdfIn PDF document text
- https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/29f3b6ccfd80d17df565ba64f429fdea/fobetudowevitosevoke.pdfIn PDF document text
- http://goldartline.ua/userfiles/file/70652896877.pdfIn PDF document text
- https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/160d7817c2b5e2---jurux.pdfIn PDF document text
- http://okmarin.ru/userfiles/file/busoxurosozewuwewivomagi.pdfIn PDF document text
- https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160ae26749d99c---ribusolevegokadi.pdfIn PDF document text
- http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160839834b2513---59335555483.pdfIn PDF document text
- https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160802dc6dc7ce---tidurupeguxupug.pdfIn PDF document text
- https://steklo-shik.ru/userfiles/file/jebuv.pdfIn PDF document text
- http://xn--9d0b102a6wc3y4a.com/sa_upload/userfiles/file/20210526102033.pdfIn PDF document text
- http://absigorta.come/file/68301831507.pdfIn PDF document text
- http://baigeleather.com/userfiles/file/ropugafejukugufifedimakor.pdfIn PDF document text
- http://bright-mineral.com/uploadfile/file/2021060900311049.pdfIn PDF document text
- http://inistor.com/ufiles/files/53442092854.pdfIn PDF document text
- http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8816061db1---jepogimogurojasepuveb.pdfIn PDF document text
- https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/ehdpgeg2mnfkc5tjjqsoneb3o3/10295257730.pdfIn PDF document text
- http://aksaaydinlatma.com/img/editor/image/file/zukulavixopinenotabisebeg.pdfIn PDF document text
- https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f221dab803---3682709.pdfIn PDF document text
- https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/ff857956dac89b86e88358870602b4f2/kajapekosokamedidi.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=rediscovered+railway+mysteries+pdfPDF 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_off000123f7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x123F7 | 19160 bytes |
SHA-256: 0261a55bf1bf05376221a5458a2902e9b741d8d3099d1fd4aeed058faf0b42b8 |
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font_01_sfnt_off0001565b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1565B | 10988 bytes |
SHA-256: a3691e57cf1dfab8d7f4b62173b0793708407d4b4305c456110c1f48df0f9265 |
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font_02_sfnt_off00016ff8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16FF8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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