Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6fc1d7e2451e5bf…

MALICIOUS

PDF

62.4 KB Created: 2021-09-15 16:21:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: c8b789c406d4d24d6ed0de059fa19ecd SHA-1: 68e14646fba134e4e6c48efd4f16b07d3ebfdc73 SHA-256: e6fc1d7e2451e5bf86297d6d6fd59659cc4137c8d61966c02aa551d305e05b3e
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs pointing to compromised websites, many of which are designed as link farms. These links likely lead to the download of further malicious content, as indicated by the ClamAV detection as 'Pdf.Phishing.Trojan'. The presence of 'utm_term' parameters suggests a phishing or scamming attempt to trick users into downloading potentially harmful files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8923

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crewmak.ru/uplcv?utm_term=minecraft+0.11+1+apk+download PDF link annotation
    • https://ichapps.peaceofworld.com/ichapps/ckeditor-ckfinder-integration/uploads/files/94246528526.pdfIn PDF document text
    • http://jpind.pl/userfiles/file/21499606513.pdfIn PDF document text
    • http://marchmontnews.com/imgs/file/34935969889.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133fbb0bf951---47354204378.pdfPDF link annotation
    • https://hoangphatdanang.com/uploads/image/files/11642666807.pdfIn PDF document text
    • http://mspchicagolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/24806593642.pdfIn PDF document text
    • https://mklaassen.nl/images/file/zolip.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/bc36fb2645d29a981332bb9dd2c56312/46157647887.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/ok2j5sve24cdiuhlbuonmpochj/13934615836.pdfIn PDF document text
    • https://lacaune.hu/userfiles/file/60648102684.pdfIn PDF document text
    • https://marblobathware.com/app/webroot/img/files/53051257598.pdfIn PDF document text
    • https://soalmatematik.com/userfiles/file/guwaguzusabisesebeniriga.pdfIn PDF document text
    • https://rsvforum.com/userfiles/file/96117369760.pdfIn PDF document text
    • http://sieuthimaynhapkhau.com/upload/files/51399985032.pdfIn PDF document text
    • http://hanboo.cn/Uploads/file/2021090120523370554.pdfIn PDF document text
    • http://aburobocon2019.mnb.mn/uploads/files/xotokugekopomomorafe.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613e1b289b3da---73265533815.pdfIn PDF document text
    • http://kozelskadm.ru/files/uploads/files/68516963205.pdfIn PDF document text
    • https://heatingboiler.ca/fck_upload/file/3197804334.pdfIn PDF document text
    • http://rainhouse.kr/data/editor/file/91539738661339849d4728.pdfIn PDF document text
    • http://easytravel63.ru/ckfinder/userfiles/files/17411493032.pdfIn PDF document text
    • http://avision-italia.com/userfiles/files/tibebojasomorigi.pdfIn PDF document text
    • https://aalatour.com/basefile/b2caalatourcom/files/xosovovuvozob.pdfIn PDF document text
    • http://gsxr.hu/userfiles/file/59466713845.pdfIn PDF document text
    • http://supair-lux.hu/ckfinder/userfiles/files/11979455304.pdfIn PDF document text

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