Malicious PDF — malware analysis report

Static analysis result for SHA-256 12d7fb2748fc2609…

MALICIOUS

PDF

40.3 KB Created: 2021-09-27 14:33:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 46c4c1a8a4d4a313e0f24b0cc599567c SHA-1: 78f59386b0a6d4d1f60eb0d7038ebbdbecd42225 SHA-256: 12d7fb2748fc26094e21eca95b73c18d4839d8a25861feaf6f83a82c7c771bc9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a malicious phishing lure due to its structure, which contains an image designed to trick users into clicking a link. This link farm points to multiple compromised websites and IP addresses hosting further PDF documents, suggesting a distribution network for malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9455

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ageofwonders.buka.ru/sadm_files/96114620630.pdf In PDF document text
    • http://zamaro.cz/images/fcke_files/file/30543783593.pdfIn PDF document text
    • https://bdata.vn/upload/files/fozibivatizaboduzopo.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/6d9b5a57789571ed9c25c919ec75ba69/61349833202.pdfIn PDF document text
    • http://kbautotech.com/board/datafiles/imagefile/dusonomovajudo.pdfIn PDF document text
    • http://angerdress.store/ckfinder/userfiles/files/52232034217.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/161393f70c2bd2---46861451402.pdfIn PDF document text
    • http://przyrodnik-kujawy.eu/userfiles/file/4662419622.pdfIn PDF document text
    • https://bisleri.genefied.co/ckfinder/userfiles/files/7171304473.pdfIn PDF document text
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/16146a89354254---25538082491.pdfIn PDF document text
    • http://140.121.125.49/ckfinder/userfiles/files/20210913_184505.pdfPDF link annotation
    • https://mmeasar.com/mmeasarfiles/file/xuxegug.pdfIn PDF document text
    • http://jumpinfit.it/userfiles/files/37020213923.pdfIn PDF document text
    • http://www.pattyn360.com/upload/forum/files/73282346968.pdfIn PDF document text
    • https://ap-qatar.com/userfiles/files/pafabalatojaregiferafuj.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16150b192cc535---38397812882.pdfIn PDF document text
    • https://embassyinvietnam.com/webroot/img/files/mizotazevafekufopivosa.pdfIn PDF document text
    • https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/1e6ade6e87c0c00cf792f9abfe40887f/32991861297.pdfIn PDF document text
    • http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/e2a1fed8edc3e39298e14af055004fce/88944822087.pdfIn PDF document text
    • https://harmony-lazienka.pl/Upload/file/mufimuzomej.pdfIn PDF document text
    • https://forumhrdbekasi.com/webroot/userfiles/files/kokijipuzof.pIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=download+drastic+ds+emulatorPDF link annotation

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