MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded links, many pointing to compromised CMS uploads or disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a spearphishing attachment designed to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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 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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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://queure.ru/uplcv?utm_term=white+heart+emoji+in+android
- http://vistobrasil.net/uploads/file/migezeruropas.pdf
- http://benhvienlaptop.biz/userfiles/file/75515803774.pdf
- http://snkpost.com/fckedit_file/file///20210904_23_50_9.pdf
- http://fotofolliasanlazzaro.it/userfiles/files/puzopuvamevanapa.pdf
- http://yejida.com/userfiles/file/zisuxemivefugotigobo.pdf
- http://kitpaisal.com/mypicture/file/nuzikijegaw.pdf
- http://teenmag.cz/userfiles/file/39395071755.pdf
- https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613527f416bf2---53660514748.pdf
- https://tcremich.lu/files/files/12493289393.pdf
- https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/1c9453f4d1dc9dab4299231fc3d9e6cb/43989884287.pdf
- http://akcjonariusz.com/UserFiles/file/bozikagesezudu.pdf
- https://szallas-karpatalja.hu/upload/34155746288.pdf
- http://mertcelikkapi.com/userfiles/file/46090182731.pdf
- http://eros-arena-reutlingen.de/eros/userfiles/file/redejo.pdf
- https://securitydm.com/slicice/file/zusikisuseminege.pdf
- http://ccsilver.kr/files/fckeditor/file/1313442055613d42f28cf1a.pdf
- https://rakowka.pl/userfiles/file/xupiwisusexebotazonad.pdf
- http://rgn2u.com/userfiles/files/wifokibirulatigoxuju.pdf
- https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/e379c8f9348cea6ff5dc356745f3a59b/pisunijog.pdf
- https://superiorservicesandsolutionsfl.com/nbloom/fckuploads/file/63078809374.pdf
- https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/89794a2f49e2dd4c1f5333b64e80aaee/81534241171.pdf
- http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613da65c35439---pokatolobigizita.pdf
- https://volpatoebrum.com.br/_common/admin/scripts/ckfinder/userfiles/files/8882602259.pdf
- https://x-leather.com/radsportfiles/file/xobogikigugowus.pdf
- https://otterdisplay.com/userfiles/file/97509618805.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_off0000b712.bind3641461a97d1a3c954c28a0fa4ecf017d1e2fb0a6cae4182954cf664cc98854 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB712 | 10424 bytes |
font_01_sfnt_off0000ce7a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCE7A | 16792 bytes |
font_02_sfnt_off0000e68c.binb183eb37c5e7d9038a836263825420fbd171011e921065ac1b5050bff633d9a6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE68C | 16936 bytes |
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