MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains numerous links to compromised websites and disposable hosting, indicating a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly suggest this PDF is malicious, likely a phishing lure or a downloader for further payloads. No scripts were extracted, but the presence of external URIs and compromised CMS uploads points to a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 6
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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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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://pistant.ru/uplcv?utm_term=apk+pulse+oximeter
- https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/161342a31bd536---53931068590.pdf
- https://cengilli.com/icerik_images/file/wujuberupu.pdf
- http://ijdssymposium.eu/upload/negadisizokinuxafutemaje.pdf
- http://jinruily.com/UploadFile/file/20210913201133720.pdf
- https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ea28778a27---76564885583.pdf
- http://fqcycpa.com/jingkelun/userfiles/files/20210916090656.pdf
- https://maggies-handmade.com/UserFiles/files/ginapatazukabigem.pdf
- https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/161391aef3d8d4---35352867471.pdf
- https://www.ijestr.com/ckfinder/userfiles/files/beginaguwotane.pdf
- https://ewastexperts.com/userfiles/files/xopeda.pdf
- http://atut-biuro.com/uploaded/file/95008680958.pdf
- http://exhibitionchannel.com/upload/23315737765.pdf
- https://yifff.se/userfiles/file/galefukaxija.pdf
- https://garraldaarquitectura.com/garralda_userfiles/files/rikuv.pdf
- http://isgsrl.it/images/file/69121205347.pdf
- https://trouver-une-ssii.com/img/pics/files/lokopufuda.pdf
- http://stevis.cz/files/file/10418732663.pdf
- http://karczma-zaborow.pl/userfiles/file/23300965843.pdf
- http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/16136b3c6c7135---36153648294.pdf
- https://aspaeng.com/files/image/files/49441465879.pdf
- https://www.loisirs-auto-occasion.fr/ckfinder/userfiles/files/piwinatukiv.pdf
- http://gadkowski.pl/repository/filemanager/file/gudeketu.pdf
- http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613f787f8c8d5---51850992614.pdf
- http://xn--80aafbjcazdrhzgiddbbcsg4l.xn--p1ai/pict/file/sefufejamaxupap.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_off0000bd6b.bine02a72da97b7807c926e91423cca1826f7434bdaa5b24993ad38f9d230e2b30c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBD6B | 16020 bytes |
font_01_sfnt_off0000e5f7.binf8134b92092a266ab358a36b0da5ed62cc4acd99ca3a850a8472ec4e352020a1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5F7 | 10420 bytes |
font_02_sfnt_off0000fdaa.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDAA | 16792 bytes |
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