Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc32de5a2dcafbb…

MALICIOUS

PDF

46.8 KB Created: 2021-07-14 10:17:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 1312354047f3a5d92cc685d262edb864 SHA-1: 911d905a46c8c28af54ced209d6299c7befe2925 SHA-256: 1dc32de5a2dcafbbd2d2a67f699fdeddc542548ccab110f750a27937f9d82c50
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm with numerous URLs, many of which point to compromised CMS upload directories. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution through these links. The file's structure and URL patterns suggest it's designed to lure users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7355

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 http://szrealty.net/uploadpic/2021-6/file/2021060308291073499.pdf In PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077a1f414522---movibawuxusimudubipoj.pdfIn PDF document text
    • http://abbuffalowings.com/uploads/files/sumedepekuxopomuxolaga.pdfIn PDF document text
    • http://sva-jeanroze.com/xmedia/file/88756593632.pdfIn PDF document text
    • http://amy-tsai.com/images_express/userfiles/files/sifubivawisejemebolatuni.pdfIn PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/f108dfa0dc82919cea7f2e03d9cd9002/mufol.pdfIn PDF document text
    • http://sl-light.ru/design/img/upload/file/tafepivopaluvapaso.pdfIn PDF document text
    • http://zavalinka.by/var/upload/file/tizore.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e4fa857446---62172577818.pdfIn PDF document text
    • http://misterholidaysanprisco.it/userfiles/files/xazemid.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/550d2c3c51e7f4a85a9cd28b9aeb3f4e/wuviwekesanafirafujes.pdfIn PDF document text
    • http://vagtteam.dk/userfiles/Files/zobirutavole.pdfIn PDF document text
    • http://tscyw.net/userfiles/file/20210714000219_88ob0g.pdfIn PDF document text
    • https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/q8jroj6eaa9idm241955iohsn1/kutekewu.pdfIn PDF document text
    • https://olmitek.by/wp-content/plugins/super-forms/uploads/php/files/91k5p0638meiurl0n8rks55jq4/jimefa.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf7f6cc6702---81052805750.pdfIn PDF document text
    • https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607d91e037c6a---diletifenuzosamasenejirot.pdfIn PDF document text
    • https://zionapostolicministries.org/uploads/file/dugodab.pdfIn PDF document text
    • http://grimastone.ru/files/90787455524.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/qqhv5osg2gfqklj952nnl2r3t2/2290462930.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/ffaf131f365a13b454729c335c974ccd/wejesamalemesitajubabud.pdfIn PDF document text
    • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f08efed967---40263642282.pdfIn PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16091eb2ec1e86---11797379515.pdfIn PDF document text
    • http://www.climatisur.com/ckfinder/userfiles/files/73312212850.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1608b79124f797---xuvozuninofamebedumekux.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=rca+stereo+system+manualPDF link annotation

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