MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs, many of which point to compromised CMS upload storage or are hosted on disposable domains, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery via these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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 https://archism.ru/uplcv?utm_term=friendly+words+that+start+with+d PDF link annotation
- http://champaigncursillo.com/userfiles/file/roxinesovekubufopux.pdfIn PDF document text
- https://otterdisplay.com/userfiles/file/jijozatokoja.pdfIn PDF document text
- https://temporar.mirceaseminee.ro/printuri-fi/files/34582293169.pdfIn PDF document text
- http://viquadro.com/userfiles/files/49260579365.pdfIn PDF document text
- http://photou.cc/ckfinder/userfiles/files/63455243962.pdfIn PDF document text
- http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f484449117---60962074135.pdfIn PDF document text
- https://vietrocknet.org/app/webroot/img/files/72491203347.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/temalevudaxu.pdfIn PDF document text
- https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/4df326e9c21a0de63910b94036cf7015/42965728125.pdfIn PDF document text
- https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/161380cbf2c809---favazajotamifebivotewaxar.pdfIn PDF document text
- http://starcity-vinhomes.vn/app/webroot/img/files/guzudesiza.pdfIn PDF document text
- https://kvzriu.org/images/file/70935642196.pdfIn PDF document text
- http://fetogram.ir/images/upload/files/73897602680.pdfIn PDF document text
- http://tractortools.cz/ckfinder/userfiles/files/20973877418.pdfIn PDF document text
- https://sailstudy.in/ckfinder/userfiles/files/sunadugabuluxerowinoru.pdfIn PDF document text
- http://westpakusa.com/phpsites/vertical_living/uploads/file/kifelaladiwi.pdfIn PDF document text
- http://uts.edu.co/portal/app/ckfinder/userfiles/files/28234773908.pdfIn PDF document text
- https://www.lsv-wittlage.de/ckfinder/userfiles/files/lopexojeketiwawam.pdfIn PDF document text
- http://firewaterdamagedfw.com/test/fckeditor/uploadfiles/file/89378736322.pdfIn PDF document text
- http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1615232a04f11e---12864542762.pdfIn PDF document text
- https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/arokn5i91ghtmb1vr30iqrf9jg/40281191266.pdfIn PDF document text
- https://rosewoodcity.org/nbloom/fckuploads/file/48445220815.pdfIn PDF document text
- http://china-steamboiler.com/d/files/kasifawaseboz.pdfIn PDF document text
- http://linyuepharm.com/upload/files/xusumobidazimazot.pdfIn PDF document text
- 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_off0000d43b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD43B | 18252 bytes |
SHA-256: a2d881a9bc8494c2250344dbfa780fd3ae0b4f67d41a6a5bf150a1bf52378ff0 |
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font_01_sfnt_off0001038d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1038D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011ba4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11BA4 | 10524 bytes |
SHA-256: 78318e9a7725132d2309e7f4d80ea97d5a39c9052bbe6fad917d9bb2a95a603d |
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