Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c903c7f9a449c7b…

MALICIOUS

PDF

45.9 KB Created: 2021-09-03 09:13:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: e7d216db4b247bf86dd61fe487a2f2a5 SHA-1: 973a67cf794d8a42baffcba7292a96420eaa9752 SHA-256: 1c903c7f9a449c7b5c32e3432347857c22615fa2f67a83fa1f9d1b1608b24bf1
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF is designed as a phishing lure, using an image-based interface to trick users into clicking a link. The link directs to a compromised WordPress site, which hosts the actual malicious PDF. The ClamAV detection and ML classifier indicate a high likelihood of malicious intent, likely to deliver a phishing page or further malware. No scripts were extracted, but the embedded URLs and link farm heuristics point to a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5145

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
  • 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 45 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1607fb55acbe86---26090724989.pdf In PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/8gc15ce8b0qg56bf2g8frn66og/70333013209.pdfIn PDF document text
    • https://ikuseikyokai.jp/ckmedia//files/vujifedevimedikanuzuroge.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f06dd0cdb1---73828786947.pdfIn PDF document text
    • http://lezeckastenakosice.sk/upload/files/67820310517.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607d90b181a40---17699335750.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160835300317ad---94079086905.pdfIn PDF document text
    • https://ecotranslation.ca/upload/editor/file/fudenot.pdfIn PDF document text
    • http://cityhighclassof77.com/clients/9/9e/9ea685038b5a197d2022a69b8c6b162a/File/mesokanu.pdfIn PDF document text
    • http://tiwtactic.com/userfiles/files/56441681299.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160b9cfb5aceda---pinufuzojado.pdfIn PDF document text
    • https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/iu80p8glci8coomebkgdoe3nn6/67477730472.pdfIn PDF document text
    • http://studiotecnicobergamaschi.it/userfiles/files/mijir.pdfIn PDF document text
    • https://audit-advisers.com/userfiles/file/88483616537.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/d9b159de4222b608fafecbdfe3d3d91b/fegilo.pdfIn PDF document text
    • http://csc0451.com/userfiles/file/20210624200145_lezu9f.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160b21076d7362---wajiramazelutelaxa.pdfIn PDF document text
    • http://cosmosimpex.com/app/webroot/ckfinder/userfiles/files/mopabadob.pdfIn PDF document text
    • http://www.aqsclimited.com/EditorImages/file/munotuvazexifenewetab.pdfIn PDF document text
    • http://bularz-auto.pl/images/userfiles/file/razubabiwob.pdfIn PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160756b21bd36c---pexuzifujetod.pdfIn PDF document text
    • http://gramercy-grand.ru/files/file/16615182209.pdfIn PDF document text
    • https://fundreamz.com/ckfinder/userfiles/files/63690205065.pdfIn PDF document text
    • http://cameragiaminh.com/upload/files/dugusasag.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16072aa2812409---nubejezurajejumuduxadus.pdfIn PDF document text
    • https://drivetripper.com/userfiles2020/files/80791350584.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=hacking+books+in+urdu+pdf+free+downloadPDF link annotation