Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d75413a84c1ee1b…

MALICIOUS

PDF

40.3 KB Created: 2021-09-06 01:12:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: cf5de117f05f98784279646616abcc86 SHA-1: 68aec11edd6ce1a0a6c16eba1e15940cd5bf002c SHA-256: 4d75413a84c1ee1b5558348fa8ff56841c9d49c15b6efa4d5e78e96cc247fbe2
194 Risk Score

Malware Insights

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

This PDF is designed as a lure, presenting itself as an image to trick users into clicking a link. The link directs to a compromised WordPress site, which hosts another PDF file. This suggests a multi-stage attack where the initial PDF acts as a dropper for a subsequent malicious document. The ClamAV detection and ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8966

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 40 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 http://dogoxuavanay.vn/uploads/files/dorukuxiz.pdf In PDF document text
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160c47d16edc10---lopixejojevozifekasugat.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f821066d861---38852238587.pdfIn PDF document text
    • https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/45666f59021710e6a3f614dd20647f96/79930966502.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/d3e5aqbbq7q0a9jk1bfbjfepin/80005962860.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/160833b70c5c8d---73197957066.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/tmbhl2r5gqht0neebvv4h33d70/93496377769.pdfIn PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/d63dad2417bb7fb05bceae729f5bad03/rezexozizokivebobax.pdfIn PDF document text
    • http://lidaoxc.com/upload/files/wajugowi.pdfIn PDF document text
    • http://www.almansori-ye.com/almansorifiles/files/9930660488.pdfIn PDF document text
    • http://sinsg.com/files/fckeditor/file/wujopufiziwiteluregub.pdfIn PDF document text
    • https://horacebatten.com/ckfinder/userfiles/files/nivenirukiwufajose.pdfIn PDF document text
    • https://rjpexport.com/files/88882737058.pdfIn PDF document text
    • https://ekoelprom.pl/public/images/editor/file/vegafabimopixiganif.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607633355edbb---97223159462.pdfPDF link annotation
    • http://coumert.com/images/file/50569718795.pdfIn PDF document text
    • http://robertoantoniz.com/resources/original/file/60598975399.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bd5e24799e5---kulamasado.pdfIn PDF document text
    • http://fletcherfamilyreunion.org/clients/52745/File/gesinegiv.pdfIn PDF document text
    • http://clubselectionvoyages.com/images/file/32214639446.pdfIn PDF document text
    • http://pajurioverslas.lt/ckfinder/userfiles/files/tewisa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=shakespearean+tragedy+ac+bradley+pdf+downloadPDF link annotation

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