MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains multiple links to external websites, many hosted on compromised WordPress sites, suggesting a phishing or malware distribution attempt. The heuristic firings indicate a link farm strategy, likely to obscure the true malicious destination. ClamAV detection and ML classification confirm the malicious nature of the PDF.
Machine Learning
- Nyx PDF Classifier malicious score 0.6556
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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PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILEDThe cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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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://cructi.ru/uplcv?utm_term=safety+and+health+in+construction+pdf
- http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1610817047766b---jipugagujijaxagex.pdf
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/16079382f34953---2261445632.pdf
- http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609ca83cc56a5---feteri.pdf
- https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/51c1597cab8ff86342359a59c6fca70f/nebenipifovodexiga.pdf
- http://adamlegal.com/userfiles/file/85656495235.pdf
- http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/4no33jsd7e2mak3f05sopqs5ql/gugobizibazakogasa.pdf
- http://www.nbc.com.vn/ckfinder/userfiles/files/sikadufejoxafexurumodo.pdf
- http://djpress.pl/Image/files/wapijusisoduxaxademejig.pdf
- https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/6750d242e130a6101a718604cacbed71/39290014812.pdf
- http://x04ydivan.ru/userfiles/file/85555416619.pdf
- http://voijin.com/userfiles/files/15217322921.pdf
- https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1611438ef10596---53385791040.pdf
- http://dragoniresorts.com/userfiles/17881305387.pdf
- http://metall-press.ru/files/3210800702.pdf
- http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1b26b9d03b---bogudavexebefixuguraduv.pdf
- https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16077646ef4235---bofepigaram.pdf
- https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1610b0e44894cb---jotesaj.pdf
- http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160e834b114fa8---64415262700.pdf
- https://2-view.org/home/view/public_html/ckfinder/userfiles/files/nakujesipuluzewuvepe.pdf
- https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/puojt46dct7ukadge2agk7neuc/81091063134.pdf
- http://tugrabilgisayar.net/resimler/files/50038428196.pdf
- https://gbagencement.fr/uploads/file/48639747709.pdf
- http://agriturismocorteerbatici.it/userfiles/files/devikegebedigatawezig.pdf
- https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/k1t5qto053avdj1k61q72t1jg4/mukadabit.pdf
- http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607304473674a---76373407730.pdf
- 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_off0000da82.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA82 | 16792 bytes |
font_01_sfnt_off0000f299.bin2299df94049b3ebaebf6970df61b47487eb5a1290d02fdd7284578ccaef72366 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF299 | 11004 bytes |
font_02_sfnt_off00010c18.bin50072035c679828c2488ced57dd46051a477359202056686b680c61a3fce589d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C18 | 16836 bytes |
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