Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1fbbd4f94b98f41…

MALICIOUS

PDF

45.4 KB Created: 2021-10-06 11:32:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 54cfe93a26d5cc824874d2d1e61d8749 SHA-1: 9141179cd7bd78fdee09fc17fe1671d75b4b195f SHA-256: e1fbbd4f94b98f4136a17c5f50a19c8bb841fdc3b8b963337d29379d2e118fbe
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file identified as malicious by ML classifiers and ClamAV. It contains numerous external links, many hosted on disposable domains, suggesting a phishing or malware distribution campaign. The PDF structure and embedded URIs indicate an attempt to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9532

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://allytemp.ru/uplcv?utm_term=text+with+object+pronouns PDF link annotation
    • http://aadcnfgl.netsociality.com/upload/files/42303430821.pdfIn PDF document text
    • http://e-park.es/img/uploads/files/lozewisuvabo.pdfIn PDF document text
    • http://fmafirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/64740921175.pdfIn PDF document text
    • http://hangquangauto.com/files/gumumozeralowatuxifevom.pdfIn PDF document text
    • https://bibliothequedesarts.ch/ckfinder/userfiles/files/tigonuwidalumitavuzakuf.pdfIn PDF document text
    • http://khaskhaan.mn/uploads/userfiles/files/75431395820.pdfIn PDF document text
    • https://saunadlaciebie.pl/userfiles/file/babogezumunozuxuju.pdfIn PDF document text
    • https://machnhaduong.com/images/uploads/files/11479898680.pdfIn PDF document text
    • https://felixtrail.com/imagini_ws/9884431178.pdfIn PDF document text
    • http://silverspringabw.com/uploads/files/22677247738.pdfIn PDF document text
    • http://4226080.kad.tw/kads/ckfinder/userfiles/files/16205048600.pdfIn PDF document text
    • http://33podarka.ru/pictures/files/xibofizevosib.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614440d21c85c---25677804151.pdfIn PDF document text
    • http://yourhandmadeitems.com/userfiles/file/suliwijavi.pdfIn PDF document text
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16159476f1847f---gaboxemegifotide.pdfIn PDF document text
    • https://www.greenlakecruises.com/ckfinder/userfiles/files/dijoxini.pdfIn PDF document text
    • https://cfacgroup.com/uploads/FCK_files/file/ninasuw.pdfIn PDF document text
    • http://webinaris.biz/ckfinder/userfiles/publics/files/14958777210.pdfIn PDF document text
    • https://bilalyapidekorasyon.com/userfiles/file/17704812971.pdfIn PDF document text

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