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 contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to distribute malicious content. One URL, 'https://smidgel.ru/uplcv?utm_term=laugh+now+cry+later+free+download', is particularly notable as it appears to be a redirector for further malicious activity. The document body is heavily obfuscated and unreadable, but the presence of external links and the overall heuristic firings strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9922
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://smidgel.ru/uplcv?utm_term=laugh+now+cry+later+free+download
- http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608abb89cf98e---gipafojuxavuz.pdf
- https://rybczewice.pl/userfiles/file/97855673240.pdf
- http://box8websites.com/ckfinder/userfiles/files/10091498488.pdf
- https://betenenergy.com/sites/default/files/file/9459611350.pdf
- https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/d89763ea4e6bab8af69f9047862292b7/4705547118.pdf
- http://simmsfamilyreunion.com/clients/9/98/98d47f1658d09d39d77ba56043454c9c/File/48763553274.pdf
- https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/9c8f4b9c5a18b4dd1e39059cad9a74d1/19629805434.pdf
- http://techsystem.gr/data/uploads/ckeditor/files/kojisoxunofusekuj.pdf
- http://goldenpoolandsauna.com/user_img/files/20530934879.pdf
- http://jun-travel.com/userfiles/file/nugelitera.pdf
- https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/ac288bac29c8dcebbd5aa334b449975f/wafajegol.pdf
- https://forumhotel.by/wp-content/plugins/super-forms/uploads/php/files/jicpjqbdoaifm12ku4qrucaur0/zabevote.pdf
- http://kaies.cn/upfiles/file/jadogizeki.pdf
- http://aptchasers.com/FCKeditor/userfiles/file/5348787803.pdf
- https://accuratesearch.com/userfiles/file/kupokisupepotutefis.pdf
- https://airflow-skateboards.com/upload/file/31019826217.pdf
- https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/7888c4050968b0bc43151aba1fbd6fe3/pomarobukagazaguxozulin.pdf
- https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/3142327db16125bd8a0a61b4cd7f926e/2591466262.pdf
- https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607894439b5b2---61048328596.pdf
- https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/e1b5e365db5446125a74a2852f2f182a/kojerusedoguse.pdf
- http://www.anclupnapoli.it/userfiles/file/susuzo.pdf
- https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ae5c922458d---33243149753.pdf
- http://malverne69.com/clients/a/a7/a743c233813d1a1dbf5c38c484d85cdc/File/8340819158.pdf
- http://mikailang.net/userfiles/file/20210501162150_1069027859.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000de14.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE14 | 16792 bytes |
font_01_sfnt_off0000f625.bin11c5a07d087146020572b41e3c25cf6f3fd7b709257038c787216a38c3b0495f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF625 | 16228 bytes |
font_02_sfnt_off00010c08.bincfb9ad982b40bc7c0566846cf6fc8407f8b5a97a1e9b9a86ac7f164abaa12561 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C08 | 17780 bytes |
font_03_sfnt_off00013b37.bindb7cf8c9d661b44b0b26f1be0df12b8106529c6018b568d24ad5a4734ad3a61a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13B37 | 10752 bytes |
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