Malicious PDF — malware analysis report

Static analysis result for SHA-256 82c216c6565295ba…

MALICIOUS

PDF

63.7 KB Created: 2021-06-12 20:05:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 48a4b08dbdc87d1f75ce588811fd8dc5 SHA-1: 0553574316eaa010007ca486c962fdcf515d1d61 SHA-256: 82c216c6565295bac142857c37464a5799e194e12ee334271041e11cac2c2ce6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is classified as malicious and contains numerous links to compromised websites, likely serving as a lure for users seeking specific downloads. The presence of multiple links to compromised CMS uploads and link farms suggests a phishing or malware distribution campaign. No scripts were extracted, but the overall structure and URL patterns indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9140

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://queure.ru/uplcv?utm_term=roblox+private+server+apk+download PDF link annotation
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160873ed7763f5---1248946489.pdfIn PDF document text
    • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/02fd6e386192a9b66adbe9db554b4fa8/levinitibavotubebesorix.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1608cd3b092f06---25185014637.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607e3a2cbeb86---95375808321.pdfIn PDF document text
    • https://nepalimodelagency.com/userfiles/file/64818432481.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/1d67f8edd71ab98139aac553f483b43a/21327530905.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/d947417df2951a33c141a5e7201fae30/36684367110.pdfIn PDF document text
    • http://robbinsfamilyhealthcare.com/clients/2/2c/2c787fa606fc56c3a3a24dfc5409695f/File/76655217317.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/b1a87e66acae8c43f49421c964010cf9/45142018577.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c85f5f2222---83589327576.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a676b5aab98---zufazoropafaru.pdfIn PDF document text
    • http://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/6fec7a657f90b8e52063507e48e6bf71/movubi.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/uhlnpobsaaq9reun6igvhpkm4q/jowezavutafomajaxideni.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098b0c64fc11---sumibapomuwe.pdfIn PDF document text
    • https://burgas-remonti.com/userfiles/file/47798885638.pdfIn PDF document text
    • http://kaushalacademy.org/ckfinder/userfiles/files/72650020251.pdfIn PDF document text

Related samples 8

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