Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9bab9925678a3c2…

MALICIOUS

PDF

61.2 KB Created: 2021-09-20 02:04:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 96983ee22df18c32f1eeae82c7406c7e SHA-1: 39d192589662f680123d43d0e02ad12528364084 SHA-256: c9bab9925678a3c2532009766c7271ae252041bbd45d3fe03eb3c630f635836c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple external URLs, many of which are hosted on compromised CMS uploads or disposable domains, suggesting an attempt to distribute malicious content or phish users. The presence of embedded URLs and the overall structure indicate a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7741

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://computerzone.pk/file/54944937700.pdf In PDF document text
    • http://cichanski.com/Upload/file/16086498492.pdfIn PDF document text
    • http://jedzenie365.pl/ckfinder/userfiles/files/midijaw.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161455f0bae9d1---vujanomadiwuwitap.pdfIn PDF document text
    • https://www.tamilsaga.com/ckfinder/userfiles/files/selatunoronewub.pdfIn PDF document text
    • http://optometrystaprzemysl.pl/userfiles/file/jejaduduva.pdfIn PDF document text
    • http://teifsepahan.com/files/file/36447694795.pdfIn PDF document text
    • https://bjjewels.net/nbloom/fckuploads/file/65162281520.pdfIn PDF document text
    • http://avvocatogiuliani.it/userfiles/files/pomevadasusodosinajus.pdfIn PDF document text
    • https://retrofitoman.com/ckfinder/userfiles/files/zazexuxumipoga.pdfIn PDF document text
    • http://www.nomorcantikjoss.com/file/wanifizukedit.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/r17il56173eah1mm3e76g8p0n0/zolimulovapikanitipomemod.pdfIn PDF document text
    • https://onhimalayas.com/ckfinder/userfiles/files/33323492025.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146877b1bab0---26962359432.pdfIn PDF document text
    • http://ifap.it/images/file/xogokenepunologixaze.pdfIn PDF document text
    • http://mynigaoe.com/upload/file/20210918181700.pdfIn PDF document text
    • http://cachnhietwin.com/luutru/files/zirumotonikiforog.pdfIn PDF document text
    • http://arredamenticucinesiciliane.it/userfiles/files/zepapez.pdfIn PDF document text
    • https://khabul.mn/mmpa/userfiles/files/99725143238.pdfIn PDF document text
    • http://huzatfokozo.hu/editor_up/19268211773.pdfIn PDF document text
    • http://www.lbtfilm.com/uploads/files/duxigul.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=iphone+x+giveaway+2021PDF link annotation

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