Malicious PDF — malware analysis report

Static analysis result for SHA-256 85601d3b7e5f61af…

MALICIOUS

PDF

72.5 KB Created: 2021-07-18 04:56:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: f03fe880288210fd9fb028b55f7d3e33 SHA-1: d608424682523b1f4fb15f1b11804e9ec850b6d7 SHA-256: 85601d3b7e5f61af08de0cc27f2b576d061b02ee06e4dc10f585093b425f4273
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external websites, many of which are hosted on compromised CMS platforms. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for these links, suggesting an attempt to obscure the true destination or purpose. While no scripts were explicitly extracted, the nature of the links and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5460

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 http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf47e9413c---toxapevesi.pdf In PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/57724589e279eb53c91dc78fec9b5d77/lodasarotapavapoj.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094b7f2370a5---797105318.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/kizavufisevoketilim.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160e0a3617b09f---81878268769.pdfIn PDF document text
    • https://asthasupermarket.com/userfiles/file/nelawokewudaxafure.pdfIn PDF document text
    • http://nano-vip.com/ckfinder/userfiles/files/67955675539.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/16229b57fbb638104cf8747fcc4da6b0/mesomur.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/1olkoqqpqe0h6umbv4ueied5g0/18571254522.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/0165c6d2729ac902965f35cd5138dd3b/xajiselobokisuvewodubaw.pdfIn PDF document text
    • http://casaledellasignora.it/userfiles/files/jewumabuterilirul.pdfIn PDF document text
    • https://angkortaxiservice.com/userfiles/file/nekobunabelulegeruze.pdfIn PDF document text
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082311f491b4---42645853773.pdfIn PDF document text
    • http://wabasnb.com/files/fckeditor/file/68003860860a60acf28089.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160969905cd4b7---4212130702.pdfIn PDF document text
    • https://naucharts.com/ckfinder/userfiles/files/newilomudumaruzi.pdfIn PDF document text
    • http://sunrui-ti.com/d/files/47558651027.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608580b28c359---16355269065.pdfIn PDF document text
    • http://alpha-cp.com/userfiles/file/degemevagilukiro.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/4i0mkrb8bc7qmhq5271s985alp/30686282466.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084389e81a08---72964944647.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/ad94a6f07d802e634c7af74d9bf477de/57500499232.pdfIn PDF document text
    • http://photo-preiss.com/upload_files/files/30753739828.pdfIn PDF document text
    • https://jetzterstrecht.hamburg/wp-content/plugins/super-forms/uploads/php/files/c7akpa90qoggdm32rtkp1rju12/lefetadirokukirozikagaze.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=subway+surfers+old+apkPDF link annotation

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