Malicious PDF — malware analysis report

Static analysis result for SHA-256 127b3e1ac4fcf44e…

MALICIOUS

PDF

63.2 KB Created: 2021-06-26 23:07:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 6528a1ae46189acc2280aea34339ab1c SHA-1: 649cc5a7a1b0e4d7f43544193f8678d6ca663094 SHA-256: 127b3e1ac4fcf44ec9c7c43e2f9e2147e036712a78670eb214f094110432efed
124 Risk Score

Malware Insights

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

The PDF file contains a link farm, with many URLs pointing to compromised CMS uploads and disposable hosting domains. This suggests the document is designed to lure users to external sites, likely for phishing or malware distribution. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4957

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://goldnumber.info/userfiles/file/96375390807.pdf In PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160b87847be234---pijep.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d42d0ac9219---88288946832.pdfIn PDF document text
    • http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608446bb8585d---vopawazamuwijajivokubigo.pdfIn PDF document text
    • http://esenkardeslerinsaat.com/resimlerfiles/25448020663.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/4bff63b5e7f74033f4a93a330a5d064a/medopegewawofadonamo.pdfIn PDF document text
    • http://oguzlarotomatiksanziman.com/depo/sayfaresim/file/41720916933.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dcb45319e4---pofusupekivukeze.pdfIn PDF document text
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/41682987060a242c63c707.pdfIn PDF document text
    • http://palyavalaszto.hu/teszt/upload/file/98574195164.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/dcea15d880a193955ca325ef586aaa8b/surizaniradi.pdfIn PDF document text
    • http://gd-weimi.com/upfolder/e/files/20210625074924.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/9b8946712739dfc2d08c370dfd6a6342/vakilekujozaxixubixifo.pdfIn PDF document text
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/02o35o914n6lspr21qrtpttd99/18284182101.pdfIn PDF document text
    • http://trendymamy.pl/userfiles/file/dejijisuriwifo.pdfIn PDF document text
    • https://aterhesseg.com/up_image/file/45308551498.pdfIn PDF document text
    • http://sity-luxe.ru/userfiles/file/49772490879.pdfIn PDF document text
    • https://turbooto.vn/upload/files/zetobusofuxomufu.pdfIn PDF document text
    • https://299-45.com/CKEdit/upload/files/lifasisujivewo.pdfIn PDF document text
    • http://nktrading.qa/file/files/2757733491.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608ada99509e9---vanenujomom.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/vb77bb1coqg5a2h4ql84d2gd8k/zezewikededozekolitapipen.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607022012b3d2---63442026533.pdfIn PDF document text
    • https://www.reflectionuk.com/wp-content/plugins/super-forms/uploads/php/files/sjb4dfrfhr68j4cl0ih38cnrl7/54414582402.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=what+does+a+herniated+disc+feel+like+in+middle+backPDF link annotation

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