MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document contains numerous embedded URLs that point to various domains, many of which appear to be compromised CMS upload directories. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for link farms, and the 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' firings strongly suggest malicious intent. The document body is heavily obfuscated and unreadable, but the presence of external URIs and the link farm structure are indicative of a phishing or malware distribution lure.
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 https://infrive.ru/uplcv?utm_term=4+inches+in+4+weeks PDF link annotation
- https://svarovanijelinek.cz/ckfinder/userfiles/files/56808674589.pdfIn PDF document text
- https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b750a86192d---risamomezezo.pdfIn PDF document text
- https://groupunsur4.com/contents//files/zatupapigubafib.pdfIn PDF document text
- http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160a3aafae8b40---61820425518.pdfIn PDF document text
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/rdb1tspscda3nc7trja6qe0gog/rubafadikeromamupitivikej.pdfIn PDF document text
- https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/366ea468f588da9080dc3cc43c4ea1dc/36987722951.pdfIn PDF document text
- https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/70506422b23d056d65000f4dd6722dd4/88915725486.pdfIn PDF document text
- http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160885734422b8---74242821187.pdfIn PDF document text
- http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/8ec832eb49e7617325c00f4d387ab1f5/kizizigudaxelakefujewumi.pdfIn PDF document text
- https://apc-algercentre.dz/ckfinder/userfiles/files/tafuvonivepulififof.pdfIn PDF document text
- https://hssanesteban.cl/files/19651767526.pdfIn PDF document text
- http://orgue-chantepie.info/FCKeditor/upload/file/36676673606.pdfIn PDF document text
- http://royalwedding.jp/images/blog//file/nezamibesedojuliwe.pdfIn PDF document text
- https://eltonltd.ru/sites/default/files/uploads/xegababit.pdfIn PDF document text
- http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16077caa9960ff---98427849606.pdfIn PDF document text
- https://arerp.kr/data/file///lunenije.pdfIn PDF document text
- http://unseretochter.com/images/file/88630331546.pdfIn PDF document text
- http://adamlegal.com/userfiles/file/38802708163.pdfIn PDF document text
- https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d90379a4285---gejoke.pdfIn PDF document text
- https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ed9b70d235---80560555667.pdfIn PDF document text
- https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/9f88582b2f553d6f28e06bd51af16c2b/90415790436.pdfIn PDF document text
- http://rajskiewakacje.pl/userfiles/file/jutipezowanejozosimefew.pdfIn PDF document text
- https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/fqv17224s1c3uhe4io2293ar68/3372249278.pdfIn PDF document text
- http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094a55fdb04b---tifubututelumesupajafitof.pdfIn PDF document text
- http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1609447a1707ff---fakekurusajepomususedose.pdfIn PDF document text
- 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_off0000f6c7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6C7 | 9960 bytes |
SHA-256: fe806e896c86b71a49f2604f863bc9bf978c49561ef4de317d3863094bf5afa1 |
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font_01_sfnt_off00010cc1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10CC1 | 17500 bytes |
SHA-256: c5dda299dac9018b5b2c0f55ba50d510e6d5f9eea79d8a21d517623bcc0b4524 |
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font_02_sfnt_off00013a52.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13A52 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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