Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6e5aa19bda8de3d…

MALICIOUS

PDF

47.0 KB Created: 2021-09-04 12:21:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 7ab3b827f1b11f0c5bf3f52c82ac1a79 SHA-1: 972a907b2063ff49c94de9da8e6b1408682b321b SHA-256: d6e5aa19bda8de3d097dbb59ca7d31c133ab624a1a664b82db147b8fef2cb3cc
154 Risk Score

Malware Insights

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

The PDF contains a large number of links, many of which point to compromised WordPress sites. These links are likely intended to lure users into downloading further malicious content or visiting phishing pages. The ClamAV detection and ML classifier also indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6908

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/4f888b950169dbfce3e1b1bec4f77249/zaratumajepa.pdf In PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/6a5ff70d30633884235aed8290530bb2/boroxomuliwexod.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607740dd70205---zomepalajixosixaruvegid.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160f5dd1b9501b---dikibetodadiviwogurubofe.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/g9bsmke1edhnbss8rmkq41t2vv/kuluje.pdfIn PDF document text
    • https://rdsdealers.com/ckfinder/userfiles/files/mudekele.pdfIn PDF document text
    • https://atl-50.com/files/file/koxonito.pdfIn PDF document text
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/f53p7h1ku9k36segb7v2i22vat/ledemilirosobubuv.pdfIn PDF document text
    • http://ehoron21.mn/uploads/files/xopovazoxu.pdfIn PDF document text
    • http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c730a97e97a---gitalibafupabijuvi.pdfIn PDF document text
    • http://lenosada.sk/editor_uploads/files/7201383584.pdfIn PDF document text
    • http://liffeyartefacts.com/fckimagefile/file/95432420853.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/fa2b2173e802e29a33034c27f31dc8b4/66788673509.pdfIn PDF document text
    • https://makenie.com/upload/files/noxubuvezujifo.pdfIn PDF document text
    • https://olterus.com/contents/files/31835835893.pdfIn PDF document text
    • https://augsburger-dartliga.de/uploads/file/lupitokabipaliw.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b3216682ab1---vozeraroxulujetefijidodoz.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1607b42af04152---madinovoxanuwejanomosed.pdfIn PDF document text
    • https://airbays.com/userfiles/file/lenafujebetuxi.pdfIn PDF document text
    • http://eltprof.ru/userfiles/file/goxinujeboraw.pdfIn PDF document text
    • https://ka-base.no/images_content/file/40109144915.pdfIn PDF document text
    • https://dcimx.com/files/86414797983.pdfIn PDF document text
    • http://www.solarwindependence.com/ckfinder/userfiles/files/23313482811.pdfIn PDF document text
    • https://law.com.sg/wp-content/plugins/super-forms/uploads/php/files/9af4567eb1e852ae14952abe6c00d116/wifefonugibupukugini.pdfIn PDF document text
    • https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/794090101b685e8b605816b78e6f9eda/29723729248.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=bacterial+cell+diagram+and+functions+pdfPDF link annotation

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