Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7e6940bc140fffb…

MALICIOUS

PDF

79.6 KB Created: 2021-07-15 18:02:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 13feba65da731b856d45dd5b29640d2d SHA-1: e3503f60464e1186d73d27103ad75b04f65dbf79 SHA-256: c7e6940bc140fffba3c48bfacc634812f54d9b4e72367bd83fe583cd60cf36c3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised websites and potentially disposable hosting. The presence of embedded URLs suggests an attempt to redirect users to phishing or malware-hosting sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6550

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://laborke.ru/uplcv?utm_term=writing+logically+thinking+critically+7th+edition+pdf PDF link annotation
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/033ae2512bbfd8595e710576f90a9d9f/sekebojokowomajogonenotur.pdfIn PDF document text
    • https://legouic-peinture.fr/userfiles/file/42736247950.pdfIn PDF document text
    • https://jxloanchien.com/style/postimage/file/61161470237.pdfIn PDF document text
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/gke1l5vdovp2qd1opbani8s0o4/23211263026.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/annb5vabkpmmmr5u79nj23ln1j/41981345735.pdfIn PDF document text
    • http://alnadaoil.com/userfiles/file/tidedaforise.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16081fecdad384---3982450379.pdfIn PDF document text
    • http://bright-inter.com/file_media/file_image/file/72158396700.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d8b29b09aa---tuzapa.pdfIn PDF document text
    • https://doublehair.center/upload/ckfinder/files/37584896158.pdfIn PDF document text
    • https://natyabio.com/uploadfiles/78925695803.pdfIn PDF document text
    • https://binarbaidfabrication.com/public_html/userfiles/file/95183284912.pdfIn PDF document text
    • http://eastendmediation.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/89347859736.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/aqnth4nhu58bsi3ltbfsqj71ao/jewovizugowegeta.pdfIn PDF document text
    • http://flambotour.it/themes/userfiles//files/bivuzakodikesomekafemu.pdfIn PDF document text
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/hev2ohsc45qq77s3gmbl2nfbkh/sifewit.pdfIn PDF document text
    • https://progin.swiss/ckfinder/userfiles/files/20147916371.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/10c26a1e439da6e254569f425f6ac190/dekovali.pdfIn PDF document text
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce769d6e103---wabogalaradagijede.pdfIn PDF document text
    • http://teplospectr.ru/images/files/61292860977.pdfIn PDF document text
    • http://nakajima-ya.com/upload/save_image/files/zagapewuvuvumeputis.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16088a4a68eb5d---gozibupevu.pdfIn PDF document text

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