PDF malware analysis — malicious · f6e3e473ea7e35cd

MALICIOUS

PDF

73.4 KB Created: 2021-04-29 14:20:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 0cde604dbdc24b50d667d7dbedeb0fac SHA-1: 93447b8b008b57fb96477227c2a0239835be9a74 SHA-256: f6e3e473ea7e35cd73b278d1a40b4c1fec1839071ae403d2cac8d2926509e056

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file functions as a link farm, directing users to numerous compromised websites. These sites, in turn, host other PDF files, suggesting a multi-stage download or redirection process. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.7771

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF 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.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small 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.
External URI info PDF_URI

PDF contains an external URL action
Embedded URL info EMBEDDED_URL

One 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://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4f4466750---sovodulezerurozipokixoki.pdf In PDF document text
- https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/160704193226c3---35129911766.pdfIn PDF document text
- http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc6a0e0fe7---fosimazekimixalogaregos.pdfIn PDF document text
- https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/9qit3kiogroprru1lerm13fpio/solemesalikaretitedep.pdfIn PDF document text
- http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/d5947a52919c428f6f78d4efa021d07f/wawituxefarupinuwu.pdfIn PDF document text
- http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075956b5309d---47051351618.pdfIn PDF document text
- http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160724f78ebffd---rukoroxogofulezopojapor.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088fad00f5ae---detubo.pdfIn PDF document text
- http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/16070872c41196---vudodetan.pdfIn PDF document text
- http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075e3dd24dcc---22354051274.pdfIn PDF document text
- https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/51ad64bee86ed611b9bb1e82ea43a7b1/11733153946.pdfIn PDF document text
- http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1607bdb4e41dd7---19163852531.pdfIn PDF document text
- http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/54ffe717258ffd805bf51f4043dca826/dodiduposokonejele.pdfIn PDF document text
- https://truck-diagnostic.ru/wp-content/plugins/super-forms/uploads/php/files/10c6a450ead4b6ec4571b209daf9ac4f/2366028126.pdfIn PDF document text
- https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/8e02e347d1e84b9c2f55ff7fdfd065d2/taxesupoju.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084c7152cde7---lirakibimote.pdfIn PDF document text
- http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16083b6c9a6d8b---xufurozo.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=anaconda+3++mp4PDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00011aee.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x11AEE	8542 bytes
SHA-256: `f63c44964ae3143980f006425a0e839d5ae370b84fa0ffa6c2e248a3d5cc2f93`
`font_00_sfnt_off0000df79.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDF79	5152 bytes
SHA-256: `df0fab299623f2c646cdbaeea133d358ef3c6dd29038455e2602d846daa668a5`
`font_01_sfnt_off0000f0fe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF0FE	12968 bytes
SHA-256: `d3b89b405fa95e960556ab0d2daadc3b4b8950b8b311d94f7da5585149151bc5`

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