MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is identified as malicious by ClamAV and an ML classifier, indicating it's a phishing or trojan PDF. It contains embedded JavaScript and a large number of external URIs, many of which point to compromised or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of embedded JavaScript, while not directly executed in this static analysis, is a common technique for exploiting PDF vulnerabilities or initiating further malicious actions.
Machine Learning
- Nyx PDF Classifier malicious score 0.9916
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://irlanc.ru/uplcv?utm_term=the+plague+camus+pdf
- http://upsshop.ru/ckfinder/userfiles/files/difudod.pdf
- http://zajazd-broadway.pl/galeria/file/5210036347.pdf
- http://centrlita.ru/archive/image/file/gupax.pdf
- https://epgeptech.hu/ckfinder/userfiles/files/86916644760.pdf
- http://thesecurityguardunion.ca/userfiles/files/34313448601.pdf
- http://dui-antidote.net/images/userfiles/file/92967498646.pdf
- http://mashhadgardi724.ir/basefile/mashhadgardi724/files/32545558431.pdf
- https://loffoxfitness.mvwebsolution.com/userfiles/files/72031763192.pdf
- http://mrukseo.pl/userfiles/file/4734067281.pdf
- http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/lguligqs09u6b8kl490d06nobh/zupuvosusuduxunaxuf.pdf
- http://apple888.vn/luutru/files/buginukepo.pdf
- http://boilerservis.ru/uploads/files/vogupijufebikoxizumizosag.pdf
- http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161563ec18d6c3---29869742075.pdf
- http://salonorganica.ru/upload/files/fujusinetad.pdf
- http://abwcrainhwy.com/uploads/files/bukogugoruw.pdf
- https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/ta50ml36esvjtaunoa8mn24p2p/51654017640.pdf
- http://konstruktor33.ru/app/webroot/files/files/fugifawisetenagevag.pdf
- http://aviapartner.biz/js/ckfinder/userfiles/files/gagixodufupatuwikopejuxak.pdf
- http://xedaphcm.com/luutru/files/jibivodusenutuxesi.pdf
- https://www.theoakshealthcare.com/my_content/js/ckfinder/userfiles/files/velokikipiwig.pdf
- https://gulamanis.com/contents/files/1207888764.pdf
- https://nstoplana.rs/ckfinder/userfiles/files/6105918561.pdf
- http://www.sushmitamukherjee.com/fckimages/file/83928102575.pdf
- http://fli.edu.mn/ckfinder/userfiles/files/kobivaketuz.pdf
- http://vitacanes.com/uploads/files/44013359989.pdf
- http://xn--h1aaebajlcgx.xn--p1ai/sadm_files/12391856089.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_off0000b5a0.bin2497a88d304f18b8288852e6e31f5678e46ed51b996285f7cd64aca4281bb26a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB5A0 | 10616 bytes |
font_01_sfnt_off0000cdb9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCDB9 | 16792 bytes |
font_02_sfnt_off0000e5cb.bin5a48e2ada88a2a036939a294978909fd58bfa803fc851693c85c4b15ff015f5d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5CB | 16756 bytes |
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