MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URLs, many of which point to compromised WordPress upload storage or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, providing no direct user-facing lure but serving as a container for these malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9908
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://irlanc.ru/uplcv?utm_term=i+forgot+my+swipe+password+on+my+android
- https://speakingparrot.com/upload/ckfinder/files/jolesururuxofudid.pdf
- http://keramann.ru/uploads/files/70894686764.pdf
- https://hopclickhospitality.com/scgtest/team-explore/uploads/files/sumodugexanobomakufemi.pdf
- http://mindennapi.hu/upload/file/35926682510.pdf
- http://maiodi.com/userfiles/files/96933779986.pdf
- http://qhchemicalsfeed.com/upload/files/lirugow.pdf
- https://trouver-une-ssii.com/img/pics/files/vaxoleviwubutafitobomexop.pdf
- https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/161428306485dc---78377454694.pdf
- http://www.kymenhome-etsinta.net/tiedostot/files/viwipuvat.pdf
- http://gidromall.ru/img/uploads/file/21270297618.pdf
- https://skywaytravelandholidays.com/ckfinder/userfiles/files/67680450605.pdf
- http://akatumusics-ang.communication-pro.fr/public/1283/contenu/file/23306328677.pdf
- http://francescasciortino.it/userfiles/files/47033297296.pdf
- https://newtop-eg.com/userfiles/file/sisisuwoguzobi.pdf
- https://bostaninsaat.com/image/files/jorepobipa.pdf
- http://bscsaoner.in/ckfinder/userfiles/files/kiwok.pdf
- https://ln80.cn/filespath/files/20210904140720.pdf
- http://enjoybowlramenandpoke.com/uploads/files/refamejemowezef.pdf
- https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/161403edfeb674---25202328071.pdf
- https://macroedunet.com/userfiles/file/72321537015.pdf
- https://asztromiskolc.hu/ckfinder/userfiles/files/vuvaxojozo.pdf
- http://de-ko-gmbh.com/ckfinder/userfiles/files/vedunabelogi.pdf
- https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/b61e80b638bb347cba6591cc70e87d4e/nadusarijovemuwofamexo.pdf
- https://jetaime-shop.dvsportbg.com/files/xobixebomuwuponebigeze.pdf
- https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/161390524d8549---kirotodidipefarijisulupaj.pdf
- http://iktoktatas.hu/files/file/40807979056.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_off0000c812.bin26d67ed4e78966c987fb9152d9ee1804d6a0c76dccd01b15b2b1d3956b6b71da |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC812 | 10948 bytes |
font_01_sfnt_off0000e15a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE15A | 16792 bytes |
font_02_sfnt_off0000f96c.bin33fa958ab309b1a3db47e807886701228ce70e86d3e69f6ca33a8128fb9d4f4c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF96C | 17260 bytes |
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