MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains a large number of embedded URIs, many of which point to compromised WordPress installations or disposable domains, suggesting it functions as a link farm for phishing or malware distribution. The presence of an IP literal in one of the URIs further increases suspicion.
Machine Learning
- Nyx PDF Classifier malicious score 0.9704
Heuristics 7
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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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Clickable URI points to raw IP address medium PDF_URI_IP_LITERALPDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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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://huiking.cn/uploads/file/240024159314.pdf
- https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/iij6k46uhm1urjujkmcsamcoe4/67138222466.pdf
- http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/82abcfb99e647e9c5bf1806468e99b56/jofubofasolajexigafasi.pdf
- http://thietbiotovn.com/Images_upload/files/29141067594.pdf
- http://fqcycpa.com/jingkelun/userfiles/files/20210621120708.pdf
- http://bidmitt.com/img/files/file/8718901850.pdf
- http://royalwedding.jp/images/blog//file/kimitekovadifaramarolurel.pdf
- https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/5a45b8ba1e09e5f38ea5f2174040bbdc/kavuzutilenakifizobutiju.pdf
- http://albatrossmrn.com/konadnew/userfiles/file/67874346698.pdf
- http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160c014474ffd3---35949588911.pdf
- http://www.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607836f28d584---wamewakelokajitabeguku.pdf
- https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d1d6ac6d1b4---gufafof.pdf
- http://phpirateboosters.com/clients/867602/File/detifefabaruradil.pdf
- http://holdemigny.fr/ckfinder/userfiles/files/zopemodupovisokoge.pdf
- https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/6cc8abca254f55a388230468fb9b7ea8/ludawafodupunafe.pdf
- https://bmat.mn/uploads/ckfinder/files/63935651959.pdf
- http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160907cb6704e4---60955765636.pdf
- http://mg001.cn/upload_fck/file/2021-6-20/20210620005948742164.pdf
- http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbb6690586b---kifatefijudekalogen.pdf
- http://imaginove.eu/data/Files/gizosu.pdf
- https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/5979cf5cafabe70482424ea3604f676f/gusenutuwusiniri.pdf
- https://xosobacninh.vn/webroot/img/files/66711878216.pdf
- http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1bf4de7754---45373718676.pdf
- https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/f7d8bd721f434d1764d967e06ab49874/1802940532.pdf
- https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/2ae92225867e1194b60df1cc5c1d4a29/sodugubanaxijesuvo.pdf
- https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/ec4aa85f83db9e076d960f52bce12bda/bijafunuminumovukasiduz.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=ridiculous+meaning+tagalog
- 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_off00010282.bina0a396d6a88669f85d81cad17f3e7d3a0e75726d3aaa718da702ebb4b720e241 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10282 | 18420 bytes |
font_01_sfnt_off0001329b.bin7559e0e12d1038faadecf0a9767d094855a6c53cab2cba25ca641d1a1398c272 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1329B | 10760 bytes |
font_02_sfnt_off00014b25.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14B25 | 16792 bytes |
font_03_sfnt_off00016336.bind0e02ea597b059e12c640018e4c0b859d2fbe31b167f59dc9fd0dc6423c65742 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16336 | 16488 bytes |
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