MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF sample was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous embedded URLs pointing to compromised websites, suggesting a phishing or malware distribution campaign. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics indicates a tactic of using link farms on potentially compromised or disposable hosting to obscure the final malicious destination.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 6
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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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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://allytemp.ru/uplcv?utm_term=perimeter+of+square+and+rectangle+formula
- http://muslimofwestbengal.com/mwb/editor_upload/files/xukajotimo.pdf
- http://amoy-art.com/Upload/file/17947293505.pdf
- http://www.publicitymailing.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1608414b99c86b---gimarexemaxukunataguvike.pdf
- https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/0cc3232f54c7e1fbdafc33ce5e4dc427/23738518936.pdf
- https://jxloanchien.com/style/postimage/file/xixuzajipivakoxezifel.pdf
- https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607ebbd6ee9f7---gabibo.pdf
- http://host.keraladreamhomes.com/~viswabrahmathach/admin/fckeditor/editor/filemanager/connectors/php/userfiles/file/25916569075.pdf
- https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/4a7dca6e4c7809ad7f749bbedcfb3b54/62832328804.pdf
- https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b3f8f7eea6---silukifufijip.pdf
- https://folklorebridge.eu/uploads/pictures/files/sinujabenagivuvevazo.pdf
- http://pkynfe.net/userfiles/file/18966104851.pdf
- http://curry-box-deluxe.de/userfiles/file/kirulixafozazoxodet.pdf
- https://medius.sk/userfiles/file/2409360053.pdf
- https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/50a4d14816f7bbcb320d7e1a8419871c/nobuxevodelu.pdf
- http://phannhan.vn/files/usersfiles/files/60063088968.pdf
- http://mikomisushi.com/uploads/files/rukanofefa.pdf
- https://bbpartner.cz/userfiles/file/59083219443.pdf
- https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608456c3648b0---90732438729.pdf
- http://bioscipublisher.com/files/upfiles/file/76777661452.pdf
- https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160878c9556580---34599229950.pdf
- https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160738c5733137---50457890447.pdf
- https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/fbe423cb1e59d7f3c7ed28cb9ef3a076/womigobupavigipitowa.pdf
- https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/16085c742bc2a2---dudedidebowumo.pdf
- http://poiskvod.ru/images/file/gebatufaputelaro.pdf
- http://refpecsbelvaros.hu/kepek/files/18181906424.pdf
- 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_off0000dd8e.binc1acf68dc405a7bb07985baaed7b00acfd1960ab592a7650c4c8532195c4207d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD8E | 18128 bytes |
font_01_sfnt_off00010db7.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DB7 | 16792 bytes |
font_02_sfnt_off000125ce.bin83c84b3cf5c4445408e27525a9aafd159d155b3fcbabe8663d1e2d75b9e0a7d4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x125CE | 11064 bytes |
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