MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs pointing to compromised websites and other PDF files, indicating a link farm designed to redirect users. Heuristics suggest this is a phishing or malware distribution attempt, with ClamAV specifically identifying it as a 'Pdf.Phishing.Trojan'. The ML classifier also strongly flagged the PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
Heuristics 6
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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 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=l%C3%ADmites+de+funciones+de+varias+variables+definici%C3%B3n
- https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/a0467d9abfd3e2a4da99dfbbbf991697/masofajodugerul.pdf
- https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/bdfeedf9c009d74f7fb9f53a81b5d54f/95580303819.pdf
- https://vpntraffic.com/upload/files/soreturewo.pdf
- https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/6fjivrvdqt5d2j5b0vancalb5s/kazojumupozobobixililu.pdf
- https://dietacud.eu/upload/file/69819898232.pdf
- http://fongyoskert.hu/userfiles/files/911086203.pdf
- http://change4best.ru/upload/file/dixibon.pdf
- https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609305cc524c5---76250957989.pdf
- http://eyela.kr/uploadfile/fckeditor/file/xubukazexiruruxel.pdf
- http://liyangah.com/Upload/file/92874320158.pdf
- https://marcuspietrek.de/MARCUS/files/file/65282026224.pdf
- http://dichvutot99.com/webroot/img/files/gorapedewujisak.pdf
- http://insidethedigitaltrend.biz/userfiles/file/69424798483.pdf
- https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c87dc1ff54---tubalojojurekemewamazaba.pdf
- https://theatresaucinema.fr/uploads/file/64054671671.pdf
- http://wedding-ideas.ru/ckfinder/userfiles/files/wevegadogivuxurewazu.pdf
- http://chongthamnguoc.vn/img/files/13880854426.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5bd8c03a01---91348941795.pdf
- http://kaitosushisb.com/uploads/files/18874937519.pdf
- http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0d0069997---29297197199.pdf
- http://accomplishtheimpossible.com/userfiles_ati/file/97347094421.pdf
- https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160837d891db8e---12482296534.pdf
- http://springgalleryng.com/Images_upload/files/12349498823.pdf
- https://radmangroup-ye.com/rgfiles/file/kubaja.pdf
- http://radtel-sport.pl/userfiles/file/nutuzogosotofafotode.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_off0000f74e.bin870043096cdb1281ec3aa2205684d88cecbc38f00fdf9420f6edf949369e021d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF74E | 11100 bytes |
font_01_sfnt_off000110e4.bin0195853ddadcf3953833e5e03ecfacef9c2a2f6ad3fad40161e962b744ef5576 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x110E4 | 19276 bytes |
font_02_sfnt_off000142d9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x142D9 | 16792 bytes |
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