Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a8acbf8f4a81758…

MALICIOUS

PDF

71.5 KB Created: 2021-09-04 08:02:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: c1c0f8a347c4c9639f3baccdbf3ec481 SHA-1: 30443169a7b759fa9741589b96c4095c5c326ae1 SHA-256: 6a8acbf8f4a817587152c0d0ffbf23459c2f19b8f446fdb2102af6c8666bfa53
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code. This script likely redirects the user to one of the identified external URLs, which are hosted on compromised WordPress sites or disposable domains. The ClamAV detection and ML classifier further support the malicious nature of this file, indicating it's likely a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6613

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://pnlcoach.com/misc2/file/ In PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/161120616db3ee---murarurivowavaxe.pdfIn PDF document text
    • http://dalnoboy.net/data/filestorage/upload/files/tekovilamavabivozamow.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b8509643e89---widaresu.pdfIn PDF document text
    • http://michelesherrinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/43014444467.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a399d2c8e9a---74471491017.pdfIn PDF document text
    • http://zit-tech.com/userfiles/files/89986880329.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/t1lc0s2vqkeqq3phltaihd0t51/fisurabojusapab.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607d8e56f150f---sukuvapufadepuxitas.pdfIn PDF document text
    • http://koslita.eu/ckfinder/userfiles/files/nubexun.pdfIn PDF document text
    • http://cps-mbstu.edu.bd/app/webroot/js/ckfinder/userfiles/files/39127116106.pdfIn PDF document text
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087b73fbf5d1---ruboxosiluwitidamuja.pdfIn PDF document text
    • http://massageindex.nl/images/uploads/75431676353.pdfIn PDF document text
    • http://hyundaidongdo3s.com/images/files/pinerenupigeruvudaxax.pdfIn PDF document text
    • https://camelcarpet.org/d/files/4394330244.pdfIn PDF document text
    • http://alohatoypoodles.com/clients/1/11/1122824db0f83c9e74cf39311881f217/File/29260663330.pdfIn PDF document text
    • https://betenagro.com/sites/default/files/file/78854788146.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/q2sudlvbmm8t8j3jf0b5sb1ois/lokef.pdfIn PDF document text
    • https://leo.tw/upload/ckeditor/files/pofomofetexepewef.pdfIn PDF document text
    • http://suttonoakfarms.com/clients/880813/File/pewimomozegupubasatetu.pdfIn PDF document text
    • http://mobitransjogja.com/files/majejejafixumobabire.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/572df5b72b0cdc9cc98afc0ef543f26c/53493500447.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a35f0cab34---fituvuxelojupapeteseme.pdfIn PDF document text
    • http://benevolo.it/userfiles/files/rovajalagi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=el+santo+rosario+domingo+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF796 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.