MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The heuristics suggest it functions as a link farm, directing users to various compromised or disposable hosting sites, likely to download further malicious content. The presence of invoice and payment-related language in the document body further supports a phishing or scam-based attack pattern, likely delivered via spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
Heuristics 7
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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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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://niestachow.pl/data/aktualnosci_imgs/file/sivamulajepezezigurijijuk.pdf
- http://araonline.hu/uploads/file/zezakinaromejapit.pdf
- https://sonarmusic.hu/up_image/file/zedofibisag.pdf
- http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160cc55197011b---nomowokusupajetatemuti.pdf
- http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b8c07d29d0---87509685023.pdf
- http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/bhtjv48opdmktif05hopcrl960/munuwozijonomokeromutelaj.pdf
- http://flirdining.com/uploads/files/65466818389.pdf
- http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c4bc05e3a6f---mevojabarowofiwosajaliz.pdf
- https://dolmalatrek.com/userfiles/file/fepog.pdf
- https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/c3d7cb2f56fef9d03b07c2e9b6d7da5b/8787936668.pdf
- http://viettelhaiphong.me/data/dulieu/files/62255521221.pdf
- https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b432deb27e4---kefakorawojob.pdf
- http://taikenplan.jp/ckfinder/userfiles/files/41318049320.pdf
- https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/72l0hi8tui66fvs18qc2m3c6fm/14271061186.pdf
- https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/89972d1faea81bd0456688703df67f46/98575000537.pdf
- https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/97695191f2b6a954a82d64a058f309d2/zufuwubidevowavelawen.pdf
- https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/91f0c81ea66d3abdbab5e257c9ae473d/sebobusiwadozemomom.pdf
- http://businessplan-capalpha.eu/mbp/upload/images/images/upload/ckfinder/97346140176.pdf
- http://bezagsecurity.cz/userfiles/96645233716.pdf
- https://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/16jg4c3les0320f5apop2209sm/44106733495.pdf
- http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f16c3abb0d---80154064437.pdf
- http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/db00096bb867afafd1e74ece086d6d63/baretuloboxu.pdf
- https://acornschoolcharleston.org/wp-content/plugins/super-forms/uploads/php/files/9547b10f0b1a03a55b35767b7e8b362c/23990546603.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=purchase+order+processing
- 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_off0000e251.bin5181e081b4ba15a9fbd77831b8b7fd01bcf5c554e60031fb9ed339bea1f82385 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE251 | 10752 bytes |
font_01_sfnt_off0000fabf.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFABF | 16792 bytes |
font_02_sfnt_off000112d1.bin80f245a7f656d505922ee3d1c166e7889fea32ce20e339d81d1c7e539d0102e3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x112D1 | 16104 bytes |
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