Malicious PDF — malware analysis report

Static analysis result for SHA-256 cab9f21c5c970d67…

MALICIOUS

PDF

63.7 KB Created: 2021-07-20 08:13:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 2ed08ecb944f0a1d4865b39fa20593dd SHA-1: 1814dbe93a78676f13b5d2c5efe723f844e06092 SHA-256: cab9f21c5c970d67cd936adf439c91ca1d9c510b6787c88c561441009ff06475
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of links, many of which point to compromised WordPress upload directories, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6468

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://ambientltg.com/wp-content/plugins/super-forms/uploads/php/files/080e1e332190c68e1fe6547ab84275be/74429059899.pdf In PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b1286eb6dc---falizefusulawareroruso.pdfIn PDF document text
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160e78ea03ab62---80996882996.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/1fidljo0n4h7tu6l49qb7bfi31/13774849471.pdfIn PDF document text
    • https://clubforeducation.com/FCKeditor/userfiles/file/43400403171.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160721e499a36e---fexuxonerevinuxusa.pdfIn PDF document text
    • http://klpa.net/userData/board/file/surexosegofomini.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b834a309fba---51841747900.pdfIn PDF document text
    • https://mdteam.se/ckfinder/userfiles/files/69449301262.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/776624763b7daf65e8d9ea299e30a311/56276831909.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a34f919f93---98613730774.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/1d8770f339ee3ae08823d8a9d0b0c67d/femop.pdfIn PDF document text
    • http://yuhongzg.com/d/files/97695478440.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/0050a45d37ba58d5c047744213a1428e/jusomezuvelo.pdfIn PDF document text
    • http://archerelectricsupply.com/userfiles/file/rulerusijaxosavor.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ae7ac855d18---xifesofumipo.pdfIn PDF document text
    • http://sapientgenerator.ru/files/userfiles/files/fuvapidewaseleruwavakoru.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/2ddff3b09efdc18cf717b34e55e15f18/tonabobu.pdfIn PDF document text
    • http://buddhavehicle.com/userfiles/file/fegarenopajiv.pdfIn PDF document text
    • https://alternatifhirdavat.com/upload/ckfinder/files/xafefigiborozikusamanuwox.pdfIn PDF document text
    • https://www.eoluk.com/wp-content/plugins/super-forms/uploads/php/files/6budf2l9ucqeqcmvr46gdr8qug/80001271356.pdfIn PDF document text
    • http://tradeweb.es/userfiles/file/piladagezumoserox.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=one+more+day+from+les+miserablesPDF link annotation

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