MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers as malicious. Heuristics indicate it functions as a link farm, directing users to compromised WordPress sites which in turn host other PDF files. This suggests a phishing or malware distribution campaign, likely initiated via spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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 http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098637057bcd---89176853313.pdf
- http://wowbond.com/upload/Fckeditor/file/disaguwowovejo.pdf
- https://humicdp.com/uploads/2021-07-03/images/files/11352904894.pdf
- http://hsi-international.com/ckfinder/userfiles/files/bigeno.pdf
- http://parentini.it/userfiles/files/makazuzerexixexifemo.pdf
- https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/53a8efbbfe7a78394bcd833791ae3a62/zeberik.pdf
- https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/0ee08bf9ebfc63af4b42560433ecb907/66948942502.pdf
- http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/7972be4036c8b478e3a059b201ef2557/bixidowe.pdf
- https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/1607eb92d1b390---desefumexamowarulibubi.pdf
- https://jf-orvalho.pt/userfiles/file/talolajudurugakuma.pdf
- http://chonburi33.com/userfiles/file/kovudowafasufobaturod.pdf
- http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160fd197a08d95---xopunexaxawabufuvovafoti.pdf
- https://ajwatravel.com/wheelmarine/userfiles/file/gimekuvebesakunimif.pdf
- https://rajakeempat.com/contents//files/tixadaki.pdf
- http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612c3d9ce3f80---xakurozufosugixeme.pdf
- https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/cc1dd70037bbf7f127d560d6b5c420a6/19037187804.pdf
- https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/80e0045886ce3c42bf1fb0b08000ae4e/46377577593.pdf
- https://olmitek.by/wp-content/plugins/super-forms/uploads/php/files/3t167oa2ncfe4bf4j1ka6ppff7/susaru.pdf
- http://daonshop.com/files/fckeditor/file/jenuzip.pdf
- http://7seapharmtech.com/Uploadfiles/files/48586750306.pdf
- http://slsnn.ru/content/file/58591352632.pdf
- http://jncs.kr/page_data/file/20210713054250.pdf
- https://www.champagne-auge-dascier.com/ckfinder/userfiles/files/56135321950.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=ablandador+de+carne+manual
- 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_off0000c274.bin252663368c427a4d8d295f90d8deca81fa95cfc37c54aca39fbd46d70eb321d7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC274 | 18264 bytes |
font_01_sfnt_off0000f17e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF17E | 16792 bytes |
font_02_sfnt_off00010995.bin627722a35eafac2d5cc87c6eb4d3bf78c003df3c4fc112842866d6d7e8c24e79 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10995 | 10396 bytes |
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