Malicious PDF — malware analysis report

Static analysis result for SHA-256 de056728ac2faaff…

MALICIOUS

PDF

73.1 KB Created: 2021-06-11 10:27:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 985cc97daed67d8f5c84b5134a4179d4 SHA-1: 85dd61224365d92501457acde704619d8d342004 SHA-256: de056728ac2faaffaab58a82f65fb31990b6810d07770265e2b1d0b3d3aa42cf
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links pointing to compromised websites, indicating a phishing or malware distribution attempt. The presence of external URIs and link farm heuristics strongly suggests the document's purpose is to redirect users to malicious content. ClamAV detection as Pdf.Phishing.Trojan further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7471

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://catamma.ru/uplcv?utm_term=phenol+and+acetic+anhydride+reaction PDF link annotation
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/a2ad6c99735a0d5a7e5bb81c50858d46/71038563760.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/23b5ffacf184e0d8b5d52a642ec665bb/22153649038.pdfIn PDF document text
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608eaa5f9cece---nipivu.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/260325d827d2a20774bbeb3a9af3dcaa/60621242189.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/c7def7e0821f37e08058d9a30c9efc59/24365519959.pdfIn PDF document text
    • https://mides.vn/images/ckeditor/files/72372387851.pdfIn PDF document text
    • https://walkandsmile.com/userfiles/file/55552851594.pdfIn PDF document text
    • http://fitnessklub-impuls.pl/uploads/assets/file/mivowotuzobovojunaxaz.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf0bcc9dc6---zevajolol.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160899af01601e---vewidaxexoli.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/826117f38b36df22a6f6e83ae716a156/jazimumabokunu.pdfIn PDF document text
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/c7239af5ab2afeb8915684ffb0c94c33/mojononuf.pdfIn PDF document text
    • https://www.alphaveneers.com/wp-content/plugins/super-forms/uploads/php/files/3fd3b3afd55ab88173377bd132ac1405/gamekepebimarenulipo.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/160706f2f0de08---jilozejomi.pdfIn PDF document text
    • http://www.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607f53deda54b---fusoda.pdfIn PDF document text
    • https://amrapalispot.com/userfiles/file/82821864878.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16080f301430f7---13862638640.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/qme8vl09u2jrceih7ehl0adkeu/35616963375.pdfIn PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/160a9d59de807a---dupeka.pdfIn PDF document text

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