MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains multiple heuristically identified malicious links, including one pointing to an IP address and another described as a link farm on disposable hosting. The presence of a 'download button' heuristic further suggests a lure. ClamAV detection and ML classification confirm the malicious nature, indicating the PDF likely serves as a dropper or downloader for further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9833
Heuristics 8
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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Clickable URI points to raw IP address medium PDF_URI_IP_LITERALPDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://oniceh.ru/uplcv?utm_term=excel+stacked+clustered+column+chart
- http://centralgiving.com/media/userfiles/file/67261331049.pdf
- https://shaplaconsulting.com/app/webroot/ckfinder/userfiles/files/mejexix.pdf
- http://mail.me.ntou.edu.tw/ckfinder/userfiles/files/20210904_124613.pdf
- http://stellarp.com/userfiles/files/36632862061.pdf
- http://samocvet.org/foto/ck/files/48660309058.pdf
- http://euredit-editions.com/userfiles/file/jajaduwobemeb.pdf
- http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613169cb65b80---wazetereboxesagegulime.pdf
- http://eyupsifalibitkiler.com/resimler/files/senixum.pdf
- https://nyirfa.hu/uploads/files/lefapafapanizogono.pdf
- https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/44248fcf3e65a1753ade4743777c7587/bixunizojaluwuj.pdf
- https://huaku3c.tw/uploads/files/202109081848375575.pdf
- http://americasbestwingspa.iorderfoods.com/uploads/files/boxefugigibibofulodonuwi.pdf
- http://140.121.180.103/ckfinder/userfiles/files/zadimozisabuzisit.pdf
- http://www.scsk12.org/policy/files/files/zoxitajazotanomorig.pdf
- http://paitoonbox.com/userfiles/files/gotezulivolikaxugogomev.pdf
- https://australiancaravancentre.com.au/application/third_party/ckfinder/userfiles/files/vudavumeb.pdf
- https://transmar.biz/ckfinder/userfiles/files/xajasumal.pdf
- http://www.tsahimmongol.com/uploads/images/files/nuxiza.pdf
- http://xn--80akazwaeiw.xn--p1ai/editorfiles/file/nibiberigegelakitajujidal.pdf
- http://ambulatorioveterinariopisillibertozzi.eu/userfiles/files/58855656806.pdf
- http://landonintergroup.com/ckfinder/userfiles/files/61188775058.pdf
- https://zevkotodoseme.com/upload/ckfinder/files/kulufetawesumupajixijid.pdf
- http://xaydunglenguyen.vn/upload/files/fdff07.pdf
- https://sukaunited4d.vip/contents/files/weninuzemuxejevesizuxet.pdf
- https://undergroundtakeout.com/userfiles/file/segobojupedajewitunabojo.pdf
- https://rh4-h1tapi-turbo.com/contents/files/tuwopabanulelulipajibido.pdf
- http://oresteruggiero.com/userfiles/files/74726180089.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_off0000d312.bind689e2338d52fc2a4e0dab003e3ba56f8b1619d3fda4215adfd5f406f411eb5e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD312 | 10820 bytes |
font_01_sfnt_off0000ebe3.bin2a174ee85cd0c16b06fc036b79808860d645ba86cc778c4549dc6417db0bce0d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBE3 | 17988 bytes |
font_02_sfnt_off00011aae.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11AAE | 16792 bytes |
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