MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains a large number of embedded URLs, many of which point to compromised websites and disposable domains. This behavior is indicative of a link farm designed to manipulate search engine rankings or to serve as a distribution point for further malicious content. The ML classifier strongly supports the malicious verdict.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
Heuristics 5
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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://queure.ru/uplcv?utm_term=spelling+worksheets+for+year+5 PDF link annotation
- http://kppzp.pl/userfiles/file/ruledupidiwowetebaporuded.pdfIn PDF document text
- http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab3df63c406---69923379741.pdfIn PDF document text
- https://saam.vn/images/content/file/lelokuxabugabal.pdfIn PDF document text
- https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/7g13814uciifu1p7ni72a6sd22/jugufunetakatiganebajup.pdfIn PDF document text
- http://bigband-ulm.de/userfiles/files/fajebakam.pdfIn PDF document text
- https://congchung7.com/upload/file/pexaranet.pdfIn PDF document text
- http://sola-brothers.com/userfiles/file/junomeveluzo.pdfIn PDF document text
- http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160ac408dab60d---80010791263.pdfIn PDF document text
- http://lhdrum.com/User_File/UpFile/file/20210603141015_NzgzNDkyOTYwMzY=.pdfIn PDF document text
- http://gachtrangtritranvinhtin.com/gachtrangtritranvinhtin/Images_upload/files/14325817090.pdfIn PDF document text
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/8fc642vi7k2f8du0ha1o3g9b6u/rulakusipit.pdfIn PDF document text
- http://olsztyntransportmedyczny.pl/userfiles/file/66612841887.pdfIn PDF document text
- http://ehoron21.mn/uploads/files/92342529445.pdfIn PDF document text
- http://inventory-acepipe.com/images/uploads/files/polalegovonenovadite.pdfIn PDF document text
- https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609421df4e4e8---jilijorefisoxog.pdfIn PDF document text
- https://advantagelic.com/singhania/downloads/file/54971662360.pdfIn PDF document text
- https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/f0092c59f19753d7afe69ee1de5979c6/92713482978.pdfIn PDF document text
- https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608780ad878df---tozewenuwodogis.pdfIn PDF document text
- http://vhktn.at/images/content/files/buwagi.pdfIn PDF document text
- http://interstyle.org/content/xuploadimages/file/67522288491.pdfIn PDF document text
- https://indianpowerliftingfederation.com/userfiles/file/1653694519.pdfIn PDF document text
- https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/1ml0g5m3g4ckqf6i6b6fp8fnk8/vaveli.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b7bb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB7BB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cfd2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFD2 | 11140 bytes |
SHA-256: 038dc23c5e75a5fad136ada84c30ce6c4c50f0d5443bf13a6e1277648af464dc |
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font_02_sfnt_off0000e9e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9E5 | 17304 bytes |
SHA-256: 6bc4b00caebed6c3eb9b0298bbf43c47f1a7ce06d3588ed4a8ef80eda8ce2f60 |
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