MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to numerous compromised WordPress upload storage locations and disposable hosting sites. The embedded URLs, such as 'https://ketchas.ru/uplcv?utm_term=is+a+plant+cell+unicellular', are likely used to distribute further malicious content or conduct phishing attacks.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
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://ketchas.ru/uplcv?utm_term=is+a+plant+cell+unicellular
- http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/trbervu4hghls5to8mbttos9v7/90638582939.pdf
- https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/308f2d90e5722a0bb73b03bf9b5dd9ec/wipelasewi.pdf
- https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160904e4def5a6---mewapobitif.pdf
- http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/cedfd8abf304f74611f08d88f9368aa0/26785010416.pdf
- http://kamkmori.cz/ckfinder/userfiles/files/23723263062.pdf
- https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/1824406513.pdf
- http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083655869798---13018421355.pdf
- http://auxerretv.com/content/public/file/74604697263.pdf
- https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/89a27084069cd3a343589fbf127fca18/2024206422.pdf
- http://wami.cc/data/files/zabetisawupivetuxu.pdf
- http://fdscience.com/UPFILE/userfiles/files/33634150323.pdf
- http://bettaletroom.com/file_media/file_image/file/1910493678.pdf
- http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c57865cc275---lejufotosinolugex.pdf
- http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac542caba99---pokapiduwatupewa.pdf
- https://bellevuecommunityfoodbank.org/wp-content/plugins/super-forms/uploads/php/files/1fa02a9a2fa49c62e1b8cb06dfa164ab/venimujoregixigezubapini.pdf
- http://alanaf.ru/userfiles/files/mufugumis.pdf
- http://amctop.com/board_data/editor_img/file/202106081841.pdf
- http://elmbbq.com/uploads/files/turarikaloxadunenulanal.pdf
- https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/ra2f2j1k9qc6dqihnggqcktcjo/rinefebelanupuper.pdf
- http://residencecarlofelice.com/userfiles/files/nawinadakobolaren.pdf
- http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160775a234a787---73308123699.pdf
- http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/1608856278b6f7---wubudopomure.pdf
- https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/09debc1e6f56a9fa6291e2ecf2a2bec2/juxonokufilali.pdf
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a364586b128---58552218456.pdf
- https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/9017e2d68dd996018f7d3d940733c428/zumokurugudadubitotuluba.pdf
- http://dobrasekacka.cz/userfiles/file/bofafoxoginibaxoma.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_off0000f26f.binae9b11265cdea37750315914081b732743bfe4934244b6d9113b20dd2df4c806 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF26F | 17424 bytes |
font_01_sfnt_off00011fa7.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11FA7 | 16792 bytes |
font_02_sfnt_off000137be.bin5b5c522b696d3f2182b9c68ea88d6b45214c567ceb6e3657a3735cc51d84a03a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x137BE | 10300 bytes |
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