MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The `wkhtmltopdf` authoring application and the nature of the URLs indicate a likely phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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 https://archism.ru/uplcv?utm_term=piaget%27s+first+stage+of+moral+development
- https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607614e53be54---ramukufofuxugagofesu.pdf
- http://www.masozilina.sk/ckfinder/userfiles/files/futazexufabalelo.pdf
- https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1607c393f08c31---28171500464.pdf
- http://hoinhikhoavn.com/img/files/vomibuwowaneradimudasigu.pdf
- http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c4a38ab2bbb---zutubokidipi.pdf
- http://akicgiyim.com/userfiles/file/19002041902.pdf
- http://copy2d.com/ftp/image/file/safafosubat.pdf
- http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/8da274ccc1b2d9b159a46e75ed4013b8/vesugebero.pdf
- https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/202eb60f6ea463f438463252b3e536ff/fazerudi.pdf
- http://trunglam.vn/uploads/userfiles/file/6107312975.pdf
- https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088470e02512---10519107516.pdf
- https://candbco.com/ckfinder/userfiles/files/zesititijavitojuzot.pdf
- http://hoshitorionline.com/uploads/files/xeguzurumugasopite.pdf
- http://uro-medical.pl/zdjecia/fotki/file/61932942484.pdf
- https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/d2c2e63ba7728c44e35e97f02cc2acf4/genevogawolowoxeda.pdf
- https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/4cb7dab62da5f3b0c3067c8b219ee90e/82906972981.pdf
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/e76ea8ccc385611756e35fea5029f498/kupirusidazi.pdf
- https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/3b98c7002d80f86e0e64182e9ec99f83/sinatozaku.pdf
- http://marcth.pl/media/fck/file/61846380176.pdf
- https://rireenfrance.com/images/upload/files/repafo.pdf
- http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc04889dad---54567876462.pdf
- http://axiomestates.com/userfiles/file/vafuvomuzodiru.pdf
- 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_off000175c3.bin379a52b2a4766997ba16f51f37eabfdc35dfbe2e9a9a6ca6f701f14e2bc16d12 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x175C3 | 10940 bytes |
font_01_sfnt_off00018ef8.bin6d9ad324733a854278eefcf5d479633a1250f0dc42f181d78d408e40b922718b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18EF8 | 16920 bytes |
font_02_sfnt_off0001bb08.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1BB08 | 16792 bytes |
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