MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous embedded URLs that point to compromised WordPress sites and other disposable hosting. These links likely lead to phishing pages or further malware downloads, indicating a spearphishing attachment delivery vector. No scripts were extracted, but the presence of numerous external links suggests a malicious intent to redirect users to harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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 https://medvor.ru/uplcv?utm_term=good+advice+is+rarer+than+rubies+characters
- https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/b8e10678e09433a13d931c43934f1cd9/76001208432.pdf
- https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16071413aef809---28672781701.pdf
- http://chineseclothingonline.net/File/naladojewinulesiwosoxi.pdf
- http://petersonspann.com/clients/3/32/32c4b2f41fa698b5b938e848169c8dcb/File/94404237.pdf
- http://kahounova.cz/userfiles/file/ridimawosojobiz.pdf
- https://fullhousetourism.com/UploadFiles/file/20210615224738125.pdf
- http://fygl.net/uploads/file/110709297470.pdf
- https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/cc1006e6904c47475e42f0313e891510/pemedufosepusebuded.pdf
- https://hpx.com.ua/wp-content/plugins/super-forms/uploads/php/files/c8d4b7719a48feb698940a33ae7be6ad/6347322126.pdf
- http://ifa-astrologie.de/userfiles/file/zibedewape.pdf
- http://alhouti.com/userfiles/file/duzotasakazubisage.pdf
- http://sbox-technology.com/upload/datoteke/rifumokulawawi.pdf
- https://gyandeepjkss.org/userfiles/file/fagitibu.pdf
- http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160893b0f8deab---16932043321.pdf
- https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160991f4187680---jogadotubimime.pdf
- https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/b94fcb59650462caca1ff2692983875d/jujojomupux.pdf
- https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/df609ed11afda8c98b5f0fb6e741fe39/4949359678.pdf
- https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077f3157237d---99775946911.pdf
- https://alice-immo.com/userfiles/file/pewuluruvofimokodozijiwa.pdf
- http://abogarestudio.com/userfiles/file/zijugikumojed.pdf
- http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/8e6e5fd92f43f8ff7bba3f0a3355a4ba/33790199442.pdf
- https://angkortaxiservice.com/userfiles/file/pamewumawuze.pdf
- https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609aefc083a34---lopate.pdf
- http://apcmagon.com/userfiles/82163174918.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_off0000ee25.binaf2b813fee88655e537026727ab8c97d4627539397f000e67403f4bfb60bbf2c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE25 | 17616 bytes |
font_01_sfnt_off00011afb.bin21cf46c36f7df9d38713806a891b5fc16623d77e10c974aaab4ae21d01160025 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11AFB | 10764 bytes |
font_02_sfnt_off000133c0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x133C0 | 16792 bytes |
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