MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
Heuristics 7
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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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Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LUREPDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 67 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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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://aygroupmuh.com/image/files/54093051837.pdf In PDF document text
- http://fujiya-la.com/uploads/files/doxetulekitigufemaxigut.pdfIn PDF document text
- http://www.farnostbobrova.cz/ckfinder/files/57144068927.pdfIn PDF document text
- http://first-group.kr/ckupload/files/sozujosowetogez.pdfIn PDF document text
- http://speckrepej.com/upload/file/90717050175.pdfIn PDF document text
- https://tiguan-wiki.ru/file/wumajuzobadubilu.pdfIn PDF document text
- http://akkoryazilim.com/userfiles/file/nivigaxuverajoxujosino.pdfIn PDF document text
- http://andersonlawdecorah.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/3728791630.pdfIn PDF document text
- http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/16130be541b658---92359276296.pdfIn PDF document text
- http://zygzak.eu/foto_dane/wysiwyg/File/fibojapinerexafivog.pdfIn PDF document text
- http://papinchess.ru/userfiles/file/80146737477.pdfIn PDF document text
- https://poolpoint.be/uploads/file/47677896702.pdfIn PDF document text
- http://aan.kz/ckfinder/userfiles/files/vuritunenasezejixiv.pdfIn PDF document text
- http://quanhoangtsi.com/upload/quangtri/files/zuliritaligiresikel.pdfIn PDF document text
- http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/4paisl3f4hafhps364tra2f4l1/takapotovosarebexakura.pdfIn PDF document text
- https://ecableapp.com/FCKeditor/FCKimgUpload/file/bazej.pdfIn PDF document text
- https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/qd4kk0ll649h9hcbujo4hqkmce/89091198229.pdfIn PDF document text
- https://electroagro.es/pub/files/lokokoxug.pdfIn PDF document text
- http://mishor-uvk.com/uploads/files/67095160389.pdfIn PDF document text
- https://www.comperat-89.fr/ckfinder/userfiles/files/4823749093.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=best+hd+wallpapers+for+android+downloadPDF 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_off0000ae2c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE2C | 10732 bytes |
SHA-256: e2249f4325b042407c695fe5bc10b85f1a552857bfca5fbc5847b0fe5e17183f |
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font_01_sfnt_off0000c6dc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC6DC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000deee.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDEEE | 14060 bytes |
SHA-256: f3faccf662cf9e7510cdc573f19994fb2fde6025e9331c1543388f01fbc6796d |
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