MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file detected by ClamAV as a phishing trojan. It contains numerous links, many pointing to compromised WordPress upload directories and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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 http://alkalacarservice.com/public_html/userfiles/file/24269915792.pdf
- http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/tr2ooo5ikfs9343tm563h2m2dh/74265350121.pdf
- http://richmediahouse.com/admin/uploads/file/34547233914.pdf
- https://ecoretras.com/file/6920762202.pdf
- https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/6dfcrf9fvkm5qkbkqnkn7loj98/95816614457.pdf
- https://planet-for-events.de/userfiles/file/selisararurupurepegadutex.pdf
- https://www.freshstartdigitalmarketing.com/wp-content/plugins/super-forms/uploads/php/files/417a7a64f6f3f7302d041f072b52d812/85565968546.pdf
- https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/2f16b3ddb437533f8cde2b8f5601357b/23056305225.pdf
- http://modero.vn/upload/files/tanabidel.pdf
- https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160c48d1fd5414---57515252758.pdf
- https://wkd-uk.com/wp-content/plugins/super-forms/uploads/php/files/e8a30938f8744084775a2083cd4ed3bd/pijaxiba.pdf
- https://www.icslights.com/wp-content/plugins/super-forms/uploads/php/files/2358fbe4146977d6a63a5683fe552912/totipupuwomemojatutepudov.pdf
- http://crm333.com/documentos/file/dadigumesurewefigim.pdf
- https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/bsblam3p7v6t3n2l7r83blb940/64902662478.pdf
- https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/8e656e367b031a2362592c0131d0e690/rafedesekili.pdf
- https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/87503bd209290267c0db98e02be0d174/50749536018.pdf
- https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dd724a8e02---41155292749.pdf
- https://evboosters.com/wp-content/plugins/super-forms/uploads/php/files/2a5672cf98db36c7f611fbcf0c5597d0/96319685682.pdf
- http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/pg71e0n5lq277ku8pl95qefqo0/44185455081.pdf
- https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/15d9fbfb0197efa4431a37f7b3610b35/33364671625.pdf
- http://ithaca1960.com/clients/8/87/874e400c25abfb160fd1c0cf9913fcd0/File/64013747680.pdf
- https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/37592aaaa4064de9c0ac5b1933592dc5/13727708215.pdf
- https://www.freshstartdigitalmarketing.com/wp-content/plugins/super-forms/uploads/php/files/edad45f1b69c8def8b24f5900e11af65/28116036798.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4d4c210637---29454935674.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=why+is+a+triangle+the+strongest+shape
- 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_off0000d79b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD79B | 16792 bytes |
font_01_sfnt_off0000efb2.bine8700d38d7916b07eb563fdf643ae04a397e2eb0bf569f6e025fae7ad4013845 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFB2 | 10640 bytes |
font_02_sfnt_off00010803.binfae5234b83d443b451c13bd15f7ee18546a4b602e22f4dc2d742c5688b3337d3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10803 | 16932 bytes |
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