MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs, many of which point to disposable hosting or compromised WordPress sites, indicative of a link farm used for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent, classifying it as a phishing trojan. Although no scripts were explicitly extracted, the nature of the URLs and the heuristic firings point towards a malicious document designed to lure users to external sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9986
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://krisoc.ru/uplcv?utm_term=ram+test+android
- http://studioarclab.eu/userfiles/files/39993819788.pdf
- http://christ-china.com/filespath/files/20210927125610.pdf
- https://stancijanegrin.com/UserFiles/files/94995971418.pdf
- https://linhquan-group.com/upload/ck/files/kodufobuzenofubojuji.pdf
- http://rejs2013.cycling-recycling.eu/imgturysta/files/sezudujikopedak.pdf
- https://songod.vn/uploads/image/files/xotigezolebovujojo.pdf
- http://abarappresentanze.it/userfiles/files/keribubatomi.pdf
- http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe8c73cfd0---wijidadefeduxareviram.pdf
- https://crownprolaw.cn/userfiles/Proj_Name/files/minodo.pdf
- http://studiotecnicomaglio.it/userfiles/files/kanud.pdf
- https://kopari.hu/files/file/90492639520.pdf
- https://betenagro.com/sites/default/files/file/1836359071.pdf
- https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/4b8377242d7de77584298f5c2df6ee4f/14821176241.pdf
- http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614810041639e---51442030810.pdf
- https://ski-valloire.com/ckfinder/userfiles/files/51461016093.pdf
- https://willmarareachamber.com/ckfinder/userfiles/files/19781848068.pdf
- https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/122b735672d30450cf6534b93b5136b2/pupowabigususedegenu.pdf
- https://hram-uspeniya.ru/ckfinder/userfiles/files/83914848226.pdf
- http://kkslavicin.cz/sites/default/files/file/44565408259.pdf
- https://maharajganjtimes.com/assets/ckfinder/core/connector/php/uploads/files/59297700937.pdf
- http://harc-ias.vn/Images_upload/files/71292802221.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_off0000af86.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAF86 | 16792 bytes |
font_01_sfnt_off0000c79d.binbf14cc6a98237be589c75954577fb2d42dc799eec12caab03ee3fbfc5fb07504 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC79D | 10408 bytes |
font_02_sfnt_off0000df2a.bin6f217810a60da063d068f783c0084a4c4bb294569caec5a9c129202cdbb0b5ba |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF2A | 15344 bytes |
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