PDF malware analysis — malicious · 64215d84a843656f

MALICIOUS

PDF

84.6 KB Created: 2021-07-24 15:43:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29

MD5: b046becd10c15c3733c829a6958de8d8 SHA-1: 276980da94be3b01fcae2274fa8ff003586fb9c3 SHA-256: 64215d84a843656ffc2bc3fed6894f59c6f00b2cff86b39dd8172eb873b6eeba

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites, suggesting a phishing or malicious redirection scheme. The ClamAV detection and ML classifier further indicate malicious intent. The primary attack pattern involves luring users to click on these links, potentially leading to further compromise.

Machine Learning

Nyx PDF Classifier malicious score 0.7925

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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 http://teraval.cz/res/file/lamoterusobekujirakefab.pdf In PDF document text
- http://3sdent.com/upload/files/tukanaf.pdfIn PDF document text
- http://4grd.com/cmsimages/file/56380070424.pdfIn PDF document text
- https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/f28bb713eb11ee68496339f7a6ad9ed2/26622614961.pdfIn PDF document text
- https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/dd1e442466c232fa281efb3bd81bf040/56362193990.pdfIn PDF document text
- https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/36cdfc0a6795340a5f5fe7baec770683/73476995828.pdfIn PDF document text
- http://cabin4kids.org/clients/0/05/050cd0fff5f75fdfd14851583cc0de74/File/99706427378.pdfIn PDF document text
- http://whippets-au.com/clients/7/7f/7f5032e15db821a993a8146895416847/File/21834230077.pdfIn PDF document text
- https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609846798612b---86885564980.pdfIn PDF document text
- http://teplospectr.ru/images/files/44567441617.pdfIn PDF document text
- https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/dfb0f59a715deb6d2940ce8adc7c4ed1/zedofoworeresij.pdfIn PDF document text
- http://abwmercury.com/uploads/files/gerizulufinofisajirowe.pdfIn PDF document text
- http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16072fd5039404---81149234111.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/85301246638.pdfIn PDF document text
- https://loctra.net/userfiles/file/30802210838.pdfIn PDF document text
- https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/b1bfc5f26cb6a690e7e47d48e595a898/65484014820.pdfIn PDF document text
- http://xn--9p4b29dncp2cc6y.net/upload/fckeditor/file/gimijokunos.pdfIn PDF document text
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/1roic649mb4kg06gqgmf986791/soserusivumubajo.pdfIn PDF document text
- http://kaushalacademy.org/ckfinder/userfiles/files/fokusuxi.pdfIn PDF document text
- http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7b6fcd2dce---gaxejajodarebuzanaredafev.pdfIn PDF document text
- http://0851gay.org/userfiles/202106file/2021061807103870554.pdfIn PDF document text
- https://rybczewice.pl/userfiles/file/suwobolarufabivebivuzu.pdfIn PDF document text
- https://www.vbclighting.com/wp-content/plugins/super-forms/uploads/php/files/5c3bb2930c272f83d22362c12b5f67ff/xebuniwurikulilibur.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=animator%27s+toolbar+pro+downloadPDF link annotation
- 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_off0000f526.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF526	10660 bytes
SHA-256: `3ebaee321145474ffda724fa297419baff3c44b8cb30cf4cd014d893fcec5480`
`font_01_sfnt_off00010d63.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10D63	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00012575.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12575	18884 bytes
SHA-256: `bbd19af8e66c61287f25c87dea7e9580adf93457258ea38191b69de87e6ed5a3`

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