MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier with high confidence. It contains an embedded JavaScript stream and a significant number of external URIs, many of which point to disposable hosting and appear to form a link farm. The presence of JavaScript suggests an attempt to execute malicious code, likely to redirect the user to a phishing site or download further malware. The link farm structure indicates a broad attempt to distribute malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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 http://lncxjzxxw.com/upload_fck/file/2021-9-14/20210914082425264818.pdf
- http://bowlingkillers.com/imgdb/files/43698596618.pdf
- http://abwvictory.com/uploads/files/xodimodemo.pdf
- https://implant-drill.com/userfiles/file/rovakesanujivivom.pdf
- https://drbumbnursinghome.in/ckfinder/userfiles/files/16899370960.pdf
- http://manhchenang.vn/webroot/img/files/20003207100.pdf
- http://cariboohose.com/userfiles/file/97210444309.pdf
- http://veganogle.es/uploads/ckfinder/files/puxakowi.pdf
- http://dpsnowodworze.pl/userfiles/file/20591917684.pdf
- http://blankheich.de/images/uploads/file/97763844292.pdf
- http://rqconsultores.com/userfiles/file/56713316263.pdf
- https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/f302b59165cc3e1cd9d27269a9fe8f4f/pekopuwax.pdf
- http://swaminarayangm.org/userfiles/file/naxazinalokekidut.pdf
- http://myconnect-thailand.com/image/upload/File/nerefafawolaribop.pdf
- https://arbormaster.us/uploads/files/fipuzibevinogefozo.pdf
- http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/161319e43d0d43---rejamowoxinudowemeluzo.pdf
- https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/e6a3fcfbbc2dde0b0e2b1fbd46ada78a/48207896338.pdf
- http://brmhn.com/userfiles/file/20210923003649_ppgxdt.pdf
- http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1614e6dda29018---monedukijijufasele.pdf
- http://seattlebestteriyaki.com/uploads/files/6621579506.pdf
- http://appli-veolia.net/ckfinder/userfiles/files/bofajumowogawevejagejuval.pdf
- http://balade-pierry.fr/userfiles/file/zipoko.pdf
- https://triangle-electronics.com/assets/userfiles/file/88302155211.pdf
- http://autostyle-japan.com/js/upload/files/79096328068.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=xps+viewer+for+android
- 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_off0000b661.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB661 | 16792 bytes |
font_01_sfnt_off0000ce73.binfc1e01cce08ebb75680ac425414eb7f7db3c41fea755f327e4be5ea9ae6cbe8a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCE73 | 19084 bytes |
font_02_sfnt_off0000ff08.bincb5838670a3743cd3a998769dec13177f0b3d0254f7df4a5f7d6ac60f11358fb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF08 | 10504 bytes |
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