MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample was identified as malicious by ClamAV and an ML classifier, indicating a high probability of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised WordPress sites and disposable domains, suggesting a phishing or malware distribution scheme. The PDF structure itself does not contain readable content, but the embedded URLs are the primary indicators of its malicious function.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b73a84d9e84---zekanupi.pdf
- https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/323f91eebb944111b5d4ba9e185d7984/jurukobidani.pdf
- http://uforoi.com/app/webroot/uploads/files/12684180409.pdf
- http://shhs69reunions.com/clients/e/e9/e92da0bc0099326815942f81a5c18dfc/File/82189319640.pdf
- https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/e9r41l6rt1k57hdue79pcd9rv3/zewitow.pdf
- https://ost-fogging.com/upload/files/51313520797.pdf
- http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/161265932f0af0---mabamo.pdf
- https://ecoretras.com/file/39222337119.pdf
- http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/6v38mp8122d1rltdoh0tl46k7c/5443393068.pdf
- http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a38f750c1ad---37698616389.pdf
- http://etabetasurvey.com/userfiles/files/8731813115.pdf
- https://cochleartudaskozpont.hu/files/siparozozixa.pdf
- http://dienmaythanglong.org/uploads/files/jupowetusururumewenowa.pdf
- https://susta.vn/userfiles/file/ripuzapoxitowusig.pdf
- http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160add236e8b2d---63150638255.pdf
- http://ebiocell.com/uploadfile/file///2021071604455029.pdf
- https://cafepiolho.com/uploads/assets/64281150784.pdf
- http://uni-farm.pl/ckfinder/userfiles/files/76457571164.pdf
- http://www.aceitunasdelguadalhorce.es/ckfinder/userfiles/files/68063863770.pdf
- http://songhakbbq.com/uploads/files/4533472308.pdf
- http://kleiberit.ru/files/file/siledogetobele.pdf
- https://wonwon.taipei/photo/file/47312938859.pdf
- http://meteosputnik.ru/userfiles/file/texupedun.pdf
- http://qachs88.com/clients/58271/File/62722383130.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=16th+ntrca+mcq+result+2019+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_off0000b5c4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB5C4 | 16792 bytes |
font_01_sfnt_off0000cdd6.bin5ce454dcce4efabfa963574c6a4f4fb63475c0202371a6135aae37ef8e9d122d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCDD6 | 15796 bytes |
font_02_sfnt_off0000f629.bin3eea910bb9069d884dcf3b237929b4d1d73f569c2df01fc4a3697f18c61820ca |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF629 | 11452 bytes |
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