MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites, likely serving as a distribution point for further malware. The PDF structure itself appears to be a link farm, a common tactic for phishing and malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9941
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 http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160889e9f5ad4a---bovonozise.pdf
- http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607938a8b45ad---79346680299.pdf
- http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/5858c8fd6d4fbbe8f629881cd7b49d84/suwitofapiliratatorisalud.pdf
- https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc88be8bfa---pakivenikuw.pdf
- https://dynasty888.com/image/files/20210612_151327.pdf
- http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608a1e2854366---92369869795.pdf
- https://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/6b9a16424d3881d2641a37c13d2ca080/rasazibibajopamotebebike.pdf
- http://polkovnik.su/upload/file/38183704300.pdf
- http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b0a688b4993---85456362678.pdf
- https://sport-jicin.cz/dokumenty/64378967064.pdf
- http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081389c1edc4---81812890096.pdf
- https://a2designbg.com/userfiles/file/mibarepugejuzisinifoj.pdf
- https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/33k2qr2urfujm4vl1bpl5v8d4d/94936479518.pdf
- https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/fe2dc48d876a79315cbd1b842ee65e16/bokabinisofotugiwesemeki.pdf
- https://shayangroup.net/wp-content/plugins/super-forms/uploads/php/files/3dcb3415d433af7731453ac7a3f1ad22/mezadatujikivariv.pdf
- http://fine-cottage.ru/userfiles/files/77375724826.pdf
- http://bangkoksolarpower.com/syner_upload/images/files/narenelubuxidedesekiw.pdf
- http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1609c45b966168---budovonapabiwoponimojozod.pdf
- http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/gineji.pdf
- http://pixel-pro.ru/upload/file/68413978358.pdf
- http://aarogyamedico.com/userfiles/file/83855787634.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=scotoactive+stomata+are+found+in+which+plants
- http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/c4c01f97d02c373490f6da8313917525/jivobebalukolosalojitoj.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_off00011a2d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A2D | 16792 bytes |
font_01_sfnt_off0001323f.bin244be7b68a2cbdca8ee0b2a6e9843b852bef7e0bd0a108214211131a6ca5faa5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1323F | 17932 bytes |
font_02_sfnt_off00016188.bina53b5c96bc1c317043e1998b92cd82c82f37a3a220fb1e18422b88c5d5ffdcd1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16188 | 11212 bytes |
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