MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm or phishing lure. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' further supports this. While no scripts were explicitly extracted, the PDF structure itself likely facilitates the redirection to these malicious URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a99d3b86fb9---23370564402.pdf In PDF document text
- http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ba7ad0313b---65072866286.pdfIn PDF document text
- https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/ca29a7dfff4aa91037c3ae4ae518eeb7/70038584961.pdfIn PDF document text
- https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b429addd8da---21936569884.pdfIn PDF document text
- https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609448df5aa85---tapeviv.pdfIn PDF document text
- https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1609ee0e1215e3---bidorivifelo.pdfIn PDF document text
- http://win-sonic.com/kida2018/ck_imgs/files/29489178177.pdfIn PDF document text
- https://muahohangnhat.com/app/webroot/uploads/files/85048609325.pdfIn PDF document text
- https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085d50406576---90350978786.pdfIn PDF document text
- http://bagumul.com/file_upload/spaw_upload/file/20210812185755.pdfIn PDF document text
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/d10826fb1f9d04051861f173ed7b6beb/dorupeladopuvazab.pdfIn PDF document text
- http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160867ed2c4b98---vebizivamozidemovolezaris.pdfIn PDF document text
- http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086daacb8ba2---bivokakepinegasokum.pdfIn PDF document text
- http://peaceinsrilanka.lk/userfiles/file/kodif.pdfIn PDF document text
- http://jtylek.pl/Upload/file/zemenorovuzajirimumikora.pdfIn PDF document text
- https://syntellect.ru/Repository/file/nitajofu.pdfIn PDF document text
- http://sapaelitehotel.com/webroot/img/files/35483553989.pdfIn PDF document text
- https://aymsoft.us/aym_image/files/lugokanogalivubejo.pdfIn PDF document text
- http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/16120a46281b55---20172424930.pdfIn PDF document text
- http://bezagsecurity.cz/userfiles/fuwibarawufenazu.pdfIn PDF document text
- https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/jc9d205i71qmd9ocgf3tp2vdu6/vawiwurixerosigajesovaj.pdfIn PDF document text
- http://citra.cl/userfiles/file/werujeruvujewurijepizamos.pdfIn PDF document text
- https://alixdemassy.fr/userfiles/file/joreza.pdfIn PDF document text
- http://fine-cottage.ru/userfiles/file/kekaxapadopubiguxi.pdfIn PDF document text
- http://savitapiti.org/ckfinder/userfiles/files/sosenirok.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=california+mathematics+grade+6+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_off0000ee5f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE5F | 11268 bytes |
SHA-256: 99ce6e539040b853d7555418590512b0374d697e72d6bcac6cb2ae09673cfe5f |
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font_01_sfnt_off00010864.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10864 | 16820 bytes |
SHA-256: a98cb3e4553a9a3e9a1fe37c9abdebb667de7bd033a22c10b111083dc3fc5ae1 |
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font_02_sfnt_off000133b6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x133B6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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