MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links to compromised websites, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body is heavily obfuscated and unreadable, but the presence of a link farm on compromised CMS uploads points to a distribution mechanism for further malware or phishing content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
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 http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/160abe7091b8ab---73586987146.pdf
- http://thebeautyofdesign.nl/ckfinder/userfiles/files/49511313165.pdf
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/g38vpoj6vncuedh3pada1dp7d3/4318410892.pdf
- https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/9a09d3936fe0ed3413d6f8c4293bc734/toduropakuxuduwif.pdf
- https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8dcb830a29---17631566276.pdf
- https://hchoanglong.vn/userfiles/file/53064811853.pdf
- https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607377832e72b---56922962141.pdf
- https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/1g03uqc3lk10kb8lhdf96i1gs8/lemupeb.pdf
- http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfd2a54d117---maxirisobobaruvojevadu.pdf
- https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/312d80383b8955490c3156a29cb3a606/77608506119.pdf
- http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160943bc6b5b33---petakekuxuxiz.pdf
- http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a70a7e58062---26561359969.pdf
- https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/569r6qtib8g88r7m22cb16t3nn/78087199516.pdf
- http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b9c05a607b8---89530312045.pdf
- https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/rma96e7pkqapn5rbd5bsca1qt5/fizagexazakikogewuvejarat.pdf
- http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088829a58ac6---46440405486.pdf
- http://lhsclassof1971.com/clients/74120/File/kogaf.pdf
- https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/03c46acae8174103d4c08ac9f2388ab1/10934563556.pdf
- https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160868d7e06b82---90430984507.pdf
- http://szrealty.net/uploadpic/2021-5/file/2021051520333473499.pdf
- http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6518ee2f44---witegujedomudimedafepug.pdf
- https://dolcezzecaffe.it/file/vemiwevasonobepixuwaku.pdf
- https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608675d70e643---texar.pdf
- https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/ebde46d1cb999680152b98660da867d7/85257443740.pdf
- http://1parareunion-club.com/clients/4/48/482fc251494624b09083a87f212a12d7/File/wozidotuwuzoxuwaki.pdf
- https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/b698bc3d0bb5a9beb83a25ff57fdd9ad/98585557053.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=unsecure+a+secure+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_off0001043c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1043C | 16792 bytes |
font_01_sfnt_off00011c53.bin648bdb91c4ff0a9c9a0f05fa37b3220d69fefed4847fc930ea84c3251d47cbfe |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C53 | 10364 bytes |
font_02_sfnt_off000133cc.bin2099df83f1c87a992f4a175b0944b90be257414fed489250fc2da74bcf19e706 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x133CC | 17344 bytes |
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