MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple distinct hosts, many of which appear to be compromised WordPress sites or disposable domains. The presence of numerous external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggest the document's purpose is to redirect users to malicious websites, likely for phishing or further malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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 http://mlight.cz/archiv/file/gejirerokibarekobonab.pdf In PDF document text
- https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/8fbd95dae7680afe3664c7ad1bed213f/dofobijuga.pdfIn PDF document text
- http://markfarolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/52393785728.pdfIn PDF document text
- http://bclgrouptt.com/userfiles/file/tebewatosef.pdfIn PDF document text
- http://pwmtqatar.net/userfiles/file/soxuxemopir.pdfIn PDF document text
- http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/jk8fl4lqjit5cmp0d64606j2v6/93569859500.pdfIn PDF document text
- https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082e6a537c45---tebudofifurorabar.pdfIn PDF document text
- https://safrano.pl/userfiles/file/pabemijijefigebuxuna.pdfIn PDF document text
- https://zionapostolicministries.org/uploads/file/1000238419.pdfIn PDF document text
- http://21cedu.com/pds/userfiles/files/44458854630.pdfIn PDF document text
- https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/vtrmj8i2tab8fv7qstqqi1kms3/64724643827.pdfIn PDF document text
- http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16099fe3f41fd4---99444461731.pdfIn PDF document text
- https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/ji2gld6tsdl2biqs007se45274/xoguvuxotaz.pdfIn PDF document text
- https://banghenails.com/upload/file/gedemabizibotupevirepo.pdfIn PDF document text
- http://xn--80aafkqcanfpgnhbng3b5i9a.xn--p1ai/pict/file/nofor.pdfIn PDF document text
- http://aksaaydinlatma.com/img/editor/image/file/rajaxoz.pdfIn PDF document text
- http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/8b5fd68cc72281e1fc03f374f91589d3/525370601.pdfIn PDF document text
- http://chixue.com/uploadfile/file/20210630225832.pdfIn PDF document text
- http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160cb2503ba575---zegexeloxuvunofuva.pdfIn PDF document text
- https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c782b88a6a4---vajinopuxefu.pdfIn PDF document text
- https://termoformat.md/img/files/37851250857.pdfIn PDF document text
- https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/a0d15499d45f6639f98dcabafde54b51/finusosilafifukurobavig.pdfIn PDF document text
- http://istrouma1971.com/clients/9/9b/9b88b062b8d6af44b28e209fcb06d7d5/File/gasaguzekogaletubigid.pdfIn PDF document text
- http://championshipsportsrings.com/clients/23492/File/86009783211.pdfIn PDF document text
- http://poetische-malerei.de/web/editor/files/kiseduxekagagidovaxagut.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=your+skin+just+like+pearlsPDF 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_off0000fba6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBA6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off000113b8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x113B8 | 17292 bytes |
SHA-256: 038ef7b3c00a024a691b6a59529d132bb72f0e31f64ac6a99f8e1a40c8313f89 |
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font_02_sfnt_off000140aa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x140AA | 10552 bytes |
SHA-256: 3e9546a4c1f37112c5239e9ebd3660bac691a746478d81436524d16ab5859347 |
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