MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically identified as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to compromised CMS uploads and disposable hosting, likely to facilitate the download of a secondary payload. The presence of embedded URLs and the 'SE_INVOICE_LURE' heuristic suggest a phishing attempt disguised as a financial document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9919
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://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0fb8726961---lokologitozagerudojetivum.pdf
- https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/5cm44ssif0qq03kloqd1gdu1si/pejomegewomu.pdf
- http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160840f614dc36---gusoxutoluxeso.pdf
- https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/778124118c28d2b331e930db63bbdb5c/33124585804.pdf
- http://bikipvuikhoedep.com/app/webroot/files/editor_upload/files/2487654333.pdf
- http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad8a081fd6b---61521475264.pdf
- https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/2f02f652b2ea1bd3579183b01f8c1592/nusareje.pdf
- http://s8radziejowice-paszkow.pl/userfiles/file/rowutuvafefamuwi.pdf
- http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/eiaguc92fcggb4nvvp62lpufg4/leruketaberefavibibiletad.pdf
- http://francisfamilyreunion.net/clients/870293/File/xutujelisi.pdf
- https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/657462f828405b48f60b2d15f093e55d/72186022352.pdf
- https://emmaushuis.org/pages/14868025393.pdf
- https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160961beca0ba7---fosedexetuwefupoxug.pdf
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609a2467ddb3f---28964446216.pdf
- https://lea-inc.com/wp-content/plugins/super-forms/uploads/php/files/035f924cb6d737a62166bb607fb4f8fb/19357505720.pdf
- https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/0c6e379ca9466f52dc629c06196f328c/72263266717.pdf
- http://rlangkhan.com/upload/userfiles/files/bixefinujima.pdf
- https://designcoordinators.com/wp-content/plugins/formcraft/file-upload/server/content/files/160781d1fdbbab---lilidepovagipofopanimoka.pdf
- https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a0770b5f3ba---wapazonuzepiwuguvoze.pdf
- http://kleinschaden-expert.de/userfiles/file/49533275010.pdf
- https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/32e4a4eae23f42fa1a215b2014295bb1/wapatixenoxosilivi.pdf
- http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160742ba8dad6e---rukufuvixepovotuwu.pdf
- http://arch-teh.com/pic/userfile/2555360002.pdf
- https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16078ff29de364---duzuronifijudutes.pdf
- https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c7a1a5b459---77621397979.pdf
- https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/7gluv0fa10s9nq2vd400pcl9mq/vetem.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=arrear+calculation+excel+sheet
- 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_off0000f17a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF17A | 16792 bytes |
font_01_sfnt_off00010991.binba64525bbd1368d1924566ac29c8893ebea0df9b82e3545057335ef485aa8ca5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10991 | 10512 bytes |
font_02_sfnt_off00012172.bin04c5b87c843c8df546dced5489f20473fcd3be4ac69bd051d07e7e5380db3ac4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12172 | 17544 bytes |
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