MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of 'sales commission letter template' in one URL and 'invoice or payment language' heuristic indicates a lure for phishing or financial scams. ClamAV detection and ML classification confirm its malicious nature, likely exploiting PDF vulnerabilities to deliver a payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
Heuristics 7
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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://zivotzaokny.eu/res/file/40896906049.pdf
- http://homenet-spb.ru/userfiles/file/42840315928.pdf
- https://www.proctoloji.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d11b844aa5---sedoduguvegewoteradiveda.pdf
- http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a70e533eed7---34111163549.pdf
- http://anandtouristcorporation.com/uploads/62348500846.pdf
- https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7acc2744fb---duneriwetudogosimexeko.pdf
- http://woori-tour.kr/FileData/ckfinder/files/20210619_E80ADBDEC3FF3B10.pdf
- https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160819d966565f---dusara.pdf
- https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/bfeb445ab1d1191f725524cbfc311d62/85861262579.pdf
- https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/c34711a5f929044d4b9cca974b386417/lunepul.pdf
- http://travellightnepal.com/userfiles/file/96939054250.pdf
- http://agriturismocorteerbatici.it/userfiles/files/32382958262.pdf
- https://alzubidi.com/userfiles/files/89318039304.pdf
- http://amouage-salon.ru/admin/ckfinder/userfiles/files/kipinij.pdf
- http://dogninja.com/userfiles/files/zenudanixevidujob.pdf
- http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16084a88cb6521---denegamojunufidazamumuna.pdf
- http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/cai6nbpi2fcfeur07cb3agqpl7/60740275471.pdf
- http://wahiclassof69.com/clients/874294/File/tokiwojevapo.pdf
- https://rhodium.vn/uploads/news_file/35698521175.pdf
- https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/ced36e2d09484ec50f1a048204d7813f/69711619967.pdf
- http://diversecityuk.com/userfiles/file/19434811441.pdf
- http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/7561798cfde01dc0695f1c33bc222da1/xukutomotalubo.pdf
- http://attlas.center/userfiles/file/79373700401.pdf
- http://moyamoya.center/images/hand_uploaded/files/92988056796.pdf
- http://mvhs1964.com/clients/2/20/2030ff4f331b14c2016b95997514b7ac/File/mumegekafuk.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=sales+commission+letter+template
- 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_off0000fb79.bin3b2c0572b0356e3b6a3b33576c9d5bed6c2f4d596ab472c8d163cdf23dc49f68 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB79 | 17012 bytes |
font_01_sfnt_off000127c8.bindb3f697f6fac8d12e6adbcf50b13f3fec6bcbf9d31701033fd73a200d9e8bea1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x127C8 | 10608 bytes |
font_02_sfnt_off00013ff5.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13FF5 | 16792 bytes |
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