MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating it is likely a phishing or trojan delivery mechanism. Heuristics identified it as a link farm pointing to compromised WordPress uploads and disposable hosting, suggesting an attempt to obscure the final payload. The presence of invoice-related language further supports a lure-based attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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 http://massarentearchitettura.com/userfiles/files/maxofafaxerabikof.pdf In PDF document text
- https://gtnet-engine.com/ckfinder/userfiles/files/98649915368.pdfIn PDF document text
- http://chaukitchen.com/uploads/files/vebedoxesalenamote.pdfIn PDF document text
- https://dgssu.com/upfolder/e/files/20210701012729.pdfIn PDF document text
- http://ekstelekom.com/userfiles/file/wusifewilexorupipaf.pdfIn PDF document text
- https://photojet.bg/userfiles/file/lexojububonupijopuvami.pdfIn PDF document text
- http://angarakshaksecurity.com/userfiles/file/19354885944.pdfIn PDF document text
- https://turasmobilya.com/img/editor/image/file/sadodoponopagevizalixezel.pdfIn PDF document text
- http://gongotour.com/FileData/ckfinder/files/20210826_4D3075FAA5C27556.pdfIn PDF document text
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b3ab36a8ec.pdfIn PDF document text
- https://parfumzone.ro/files/file/kodef.pdfIn PDF document text
- https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/3e565282a0cdb73a1ec2fa8d478c65bf/98990640485.pdfIn PDF document text
- https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607c21a381685---2854886235.pdfIn PDF document text
- https://www.spitalmoldovanoua.ro/ckfinder/userfiles/files/zuxufamanet.pdfIn PDF document text
- http://africanhairbraidingsalon.com/userfiles/file/melobusodebajok.pdfIn PDF document text
- http://jatyn.cn/upfiles/202105/file/1621154967.pdfIn PDF document text
- https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/808919d81d184ff820f51d5934ccc0c1/wepitobaxipuma.pdfIn PDF document text
- http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/1ee5b5c0f4e5b45b4420532eca1148d0/9909678637.pdfIn PDF document text
- https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/46b5ab583796fb7fed8974850ca043ac/sigugibefivetagakog.pdfIn PDF document text
- https://eingangrad.ch/userfiles/files/wifuxawuditefu.pdfIn PDF document text
- https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/imn6apegnmb198u3r1ofev3pqg/74313872825.pdfIn PDF document text
- https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/72fe6982a85fa28f557125c97f642d66/42109607383.pdfIn PDF document text
- https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/e64fca9be46339a45c2c719967a38365/wasaxaluvekesegogiro.pdfIn PDF document text
- https://mut-zur-veraenderung-hambuch.de/userfiles/file/kufowiburasonaze.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=barclays+online+banking+pdf+statementPDF 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_off0000dd78.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD78 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f58f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF58F | 11360 bytes |
SHA-256: c3ea35be86df7e5f293a822836802081042ae9f83717c0baf3ab3d8074992b71 |
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font_02_sfnt_off00010ff5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10FF5 | 17920 bytes |
SHA-256: 31ac0bff4fd1e04f8074f11e02121a98212c707f569cf2afe229db26229085a3 |
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