MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to compromised WordPress sites and disposable hosting, suggesting it functions as a link farm to distribute further malicious content. The PDF structure and embedded links point towards a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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://nhhs78.org/clients/63854/File/13049997197.pdf In PDF document text
- http://guchenes.com/d/files/petov.pdfIn PDF document text
- https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc87a0691a---15544515640.pdfIn PDF document text
- http://polletnv.be/uploads/files/91024941046.pdfIn PDF document text
- https://laplacedesstores.com/upload/file/tojula.pdfIn PDF document text
- https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/36f8974fc6235c2fdc3715cb3e79656d/24999397950.pdfIn PDF document text
- http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf585af1cc0---90966935287.pdfIn PDF document text
- https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/d87b3d2af8eae351d728067ef22165b6/lewawafiv.pdfIn PDF document text
- http://geteffective.biz/uploadfiles/file/85405993012.pdfIn PDF document text
- http://herium.net/FileData/ckfinder/files/20210825_AE21576A22DE7B20.pdfIn PDF document text
- https://studiopros.com/userfiles/file/In PDF document text
- https://dennismaloney.ca/upload/editor/file/1776600139.pdfIn PDF document text
- https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfb1ce292e7---9916851471.pdfIn PDF document text
- http://lenosada.sk/editor_uploads/files/44123821030.pdfIn PDF document text
- http://ps-chiptuning.hu/userfiles/files/9337390718.pdfIn PDF document text
- http://alumnicollegedelunion.org/clients/76066/File/23944157357.pdfIn PDF document text
- http://world-green-hope.com/uploads/files/wesuguwot.pdfIn PDF document text
- http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160902205dc2cd---wisomig.pdfIn PDF document text
- http://arcos-eff.it/userfiles/files/xinesasura.pdfIn PDF document text
- http://sofia-es.tokyo/yamituki-n/uploads/files/66835569936.pdfIn PDF document text
- http://ydtmuhendislik.com/ckfinder/userfiles/files/vufibepasibuxoguderejori.pdfIn PDF document text
- https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c2dbb3534b1---79447006594.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/baxug.pdfIn PDF document text
- http://armanetti.com/images/80155174482.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=value+and+place+value+worksheets+grade+4PDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c4c4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC4C4 | 11092 bytes |
SHA-256: 15e9be417d6ccc8b4bd1424b6198d25a85fd232c3ed202467855a39dd6453e17 |
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font_01_sfnt_off0000de7d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE7D | 17396 bytes |
SHA-256: a781c01b14aeecd677f02fdb7becfcf105f32bcba1a9ec314d76c53cb62b377d |
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font_02_sfnt_off00010b74.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B74 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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