Malicious PDF — malware analysis report

Static analysis result for SHA-256 b12d8a22cd7dc14b…

MALICIOUS

PDF

42.9 KB Created: 2021-02-26 02:18:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 105b50185dd1598803314ad68a306d58 SHA-1: 7af27d02ddcec843d98794d0b76e7c819c784e1d SHA-256: b12d8a22cd7dc14b1bf664c4afcbb157c940b93709ab0d28d1b021dc6e542eb0
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged the document as malicious. The presence of multiple links on disposable hosting further supports a malicious intent, likely to phish for credentials or distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9340

Heuristics 4

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/award?keyword=why+is+appearance+important+in+an+interview In PDF document text
    • http://lorewipa.scienceontheweb.net/mr_heater_big_maxx_80000_reviews.pdfIn PDF document text
    • https://wotutokope.weebly.com/uploads/1/3/5/3/135315373/6411180.pdfIn PDF document text
    • https://romenugerod.weebly.com/uploads/1/3/5/3/135317494/4585777.pdfIn PDF document text
    • http://mozodulo.iblogger.org/ioptron_skyguider_pro_payload.pdfIn PDF document text
    • http://kitotujebox.22web.org/homelite_blower_parts_bunnings.pdfIn PDF document text
    • http://viniveba.mywebcommunity.org/44003602038.pdfIn PDF document text
    • http://jidifulake.epizy.com/64146997552.pdfIn PDF document text
    • http://tagekef.rf.gd/57759603080.pdfIn PDF document text
    • http://vimodamugirad.rf.gd/biztalk_server_2016_licensing_guide.pdfIn PDF document text
    • http://pefoxaxogux.epizy.com/75978544299.pdfIn PDF document text
    • http://wovibojo.onlinewebshop.net/4120968183.pdfIn PDF document text
    • http://fimaxopazeviv.rf.gd/74276784426.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/ravigubobajelibin.pdfIn PDF document text
    • http://vejimugar.epizy.com/bilinear_transformation_in_mathematics.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/lilis.pdfIn PDF document text

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