Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfb6beeaa271fedf…

MALICIOUS

PDF

58.1 KB Created: 2021-09-18 00:03:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: c7c78b849f90a00c21508088d99358f1 SHA-1: a4bd210cb2a3f4817ab19c4dec8e3bc6287d117c SHA-256: dfb6beeaa271fedf94409fb4d0f7b2ddda8d10de93184207cd79b1a6609c3daf
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URIs pointing to various websites, many of which appear to be compromised WordPress installations or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the sheer volume of suspicious links suggests a coordinated effort to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6236

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://pixomot.ru/uplcv?utm_term=sophia+loren+her+own+story+full+movie PDF link annotation
    • https://thokhoavietnam.com/upload/files/6212052271.pdfIn PDF document text
    • https://emtracing.net/userfiles/file/29990661465.pdfIn PDF document text
    • http://ukrainski-rosyjski.pl/userfiles/file/dirizuxozasiwamozim.pdfIn PDF document text
    • http://personal.sut.ac.th/chantira/port/ckfinder/userfiles/files/muwarexerebufizi.pdfIn PDF document text
    • http://geometrarontani.it/userfiles/files/peposidu.pdfIn PDF document text
    • https://bahispesinde.com/gnc/veri/_files/dupuwuvuw.pdfIn PDF document text
    • http://patrick-jardinage.fr/ckfinder/userfiles/files/5866223016.pdfIn PDF document text
    • https://sagarexpress.com/userfiles/file/fevofiwogebanuwi.pdfIn PDF document text
    • https://superpackeg.com/userfiles/file/xuxagowojazo.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138a578831f4---rilukomosufemajeke.pdfIn PDF document text
    • http://www.yemany.com/yemfiles/files/31772060743.pdfIn PDF document text
    • http://jun-travel.com/userfiles/file/45758701842.pdfIn PDF document text
    • https://dnm.tw/uploads/files/202109132155494299.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16134f16e248fa---gebizakavasanubefifav.pdfIn PDF document text
    • http://kaizenlife.com/ckfinder/userfiles/files/66576703782.pdfIn PDF document text
    • http://xinyaoqiye.com/upload_fck/file/2021-9-14/20210914152232221408.pdfIn PDF document text
    • http://jungvassar.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/josaxemininaj.pdfIn PDF document text
    • http://woodwork.pl/ubezpiecz/obrazy/file/58285167563.pdfIn PDF document text
    • http://www.ciesol.es/ckfinder/userfiles/files/jutupisefo.pdfIn PDF document text
    • http://studiomuraca.eu/userfiles/files/joruzosetidalafuru.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/614e568f9bd78924e22fb0b36266fe77/moxojon.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/16145023ad8dec---51302304416.pdfPDF link annotation
    • http://xn----7sbbgprpk7biiq.xn--p1ai/admin/ckfinder/userfiles/files/rireme.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1613203b2277ef---57849311604.pdfIn PDF document text
    • https://gres-k.cat/userfiles/file/sebokidosokamesumu.pdfIn PDF document text

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