MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is identified as malicious by ClamAV and an ML classifier. It contains numerous external links, many pointing to compromised CMS uploads and disposable hosting, suggesting a link farm designed to redirect users. The PDF structure and embedded URLs indicate a phishing or malware distribution attempt, likely initiated via spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9987
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://philabc.ru/uplcv?utm_term=nctech+iris+360+manual
- http://onlineexpert.in/userfiles/file/pudabawogimimepusunuxip.pdf
- https://braintreeclinics.com/app/webroot/img/files/44237046037.pdf
- https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6c7de6836a---teguxi.pdf
- http://bjallstar.com/upload/file/77280918354.pdf
- https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c520cb95dd2---suvut.pdf
- http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/5ba6c7v90dgge22ib8gfvbd0b7/ridezixekare.pdf
- https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c7b18432651---momirevaxokosujezibob.pdf
- http://maasmartcity.com/userfiles/file/14746480398.pdf
- https://aprilboya.com/userfiles/file/tewadavoparepoburobimo.pdf
- http://chiengthai.com/file_media/file_image/file/boxadasanu.pdf
- http://polyacer-ecp.com/userfiles/files/20210701_134703.pdf
- http://dhsclassof70.com/clients/d/d1/d13f49183e6b2ef720c1f353b43de0f2/File/zokigati.pdf
- http://marinapogon.pl/upload/file/53964117219.pdf
- https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/83700639f7d1a252ecde1314ac4bed54/besujekeviloxig.pdf
- http://batiment-tunisie.com/userfiles/file/xapeduzow.pdf
- https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/44d35d64fcc80d86b6629c83d38ee0fb/98605651268.pdf
- https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/a5d979a45eb510aaec0c1b87070a2c76/widupixedoridatimoruwiket.pdf
- https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/2cc56e31bd20d7f0e1439b0a56aabe56/26207184987.pdf
- https://nilsahost.com/calisma2/files/uploads/wusupezaposikajatumibuna.pdf
- http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/bda6955ada9d44d0a91053cd88f073fa/wavaba.pdf
- https://smartcrm.cloud/upload/files/sezel.pdf
- https://alianzatours.com/imagenes/file/fogowu.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_off00013e8d.bin4358f89980979967e9b1465161fcfe64b9bcadeaf501ce731e855690112114e0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13E8D | 10916 bytes |
font_01_sfnt_off000157b6.bin29c0fa073d41746d4aa0dc0daf9d71bdbc85cfc69f497b507545f1debff2b92c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x157B6 | 17348 bytes |
font_02_sfnt_off00018555.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18555 | 16792 bytes |
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