MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file contains numerous embedded URLs, many of which point to compromised WordPress sites, suggesting it functions as a link farm to distribute phishing content or further malicious payloads. The presence of external URI links and compromised CMS upload links indicates a pattern of leveraging potentially malicious or compromised infrastructure.
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://coretry.ru/uplcv?utm_term=galaxy+note+8+touch+screen+calibration
- https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/26aa3bd29fe597183dd2f52cb33e1e3c/65355810205.pdf
- http://derp74.fooden.com/UserFiles/files/9196973459.pdf
- http://e-motyle.natura2000.pl/imgturysta/files/munojijizonilisamodojazes.pdf
- http://baodieptailor.com/uploads/2021-09-08/images/files/lowinamejefokarumu.pdf
- https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/1613fbdfe516c8---94740868176.pdf
- https://ubitanduk.com/contents/files/38793811408.pdf
- https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/71779c5edf53e34e0d094a7f798ab02f/ruges.pdf
- http://gayaarchi.com/userfiles/file/20210910083713.pdf
- http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ee3ce36543---77793368864.pdf
- http://spiregene.com/image/files/20210907_141403.pdf
- https://delaneyllc.com/ckfinder/userfiles/files/bokadotafefepi.pdf
- http://handsonmontessoripk.com/userfiles/files/xazabaxobiferodinobot.pdf
- http://studio-rivetti.it/userfiles/files/41314129054.pdf
- https://thaiahpa.com/flash/files/31249910191.pdf
- http://litho-and-co.fr/ckeditor/upload/files/35035612955.pdf
- https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/4abed5e5a877827732d2d829046e37d6/81348786323.pdf
- http://sakesushilakehavasu.com/uploads/files/67875474936.pdf
- http://omnoiptv.com/outscapes/admin/ckeditor/uploads/ck/files/zodubefaduma.pdf
- http://isotech.si/uporabnik/file/fofubibepajewe.pdf
- http://fra2ange.it/userfiles/files/diwikepusab.pdf
- http://azco.friend-match.com/upload/files/924609997.pdf
- https://weilmclainboiler.ca/fck_upload/file/zejiwitume.pdf
- https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613af44525267---6729080296.pdf
- http://romovi.net/sgi_userfiles/userfiles/files/vikilaperosokuxizinikuxa.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_off0000bd67.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBD67 | 16792 bytes |
font_01_sfnt_off0000d57e.bin5a499c961712db0cff5c248d6674f419bee086996960653908145b11c029f015 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD57E | 11028 bytes |
font_02_sfnt_off0000ef33.bin5ec6335780cb6f9a154aaef4f77ba3ee477c308122225c5ee143e054fcb46848 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF33 | 16408 bytes |
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