Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb062397a7c8d1b1…

MALICIOUS

PDF

63.8 KB Created: 2021-01-01 08:52:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 182799576dc12f578df15284414a4cc1 SHA-1: 112d993a56e6b619665651bf9a932556b404cf86 SHA-256: eb062397a7c8d1b120718eac6daa3bf371612215fa9e2caecb412761deea55f4
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The SE_MFA_LURE heuristic suggests the document is designed to trick users into providing credentials or MFA codes. The ML classifier and ClamAV detection further support its malicious nature. The primary IOC is the redirector URL, which is likely used to host or deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://gettraff.ru/123?utm_term=philips+airfryer+manual In PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/cf1f08dc23ec.pdfIn PDF document text
    • https://lulitetuxopibol.weebly.com/uploads/1/3/1/1/131164377/553145.pdfIn PDF document text
    • https://lovizedisar.weebly.com/uploads/1/3/1/4/131437361/zurekomita.pdfIn PDF document text
    • https://biwefixosepow.weebly.com/uploads/1/3/4/3/134334309/1473ba6c6760.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/guzef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab841935-6bc6-4cb5-b852-64a953867349/words_describing_the_sound_of_rain.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/557b16ef-fe8f-4d30-ab0d-b236a02a5615/95699624677.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0748301b-5b33-4ce8-84ba-1b4eee6f0904/wesapij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8dfb5af-fde2-4390-a30b-edd82845e55b/cake_pizza_factory_wedding_cake_cooking_games.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9e5f3db-b895-4699-b585-8adec55e97d4/lewomemava.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/somijofarafa.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/zinebubuxubakima.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e6d205e-e101-49e3-8f6d-67209630d1d6/nanubefekilaxotomi.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bfa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFA3 5244 bytes
SHA-256: 8c45bfe2d2ddd2e03cc45cb6667e17d35b13c875034b98c3897c966ce07e1511
font_01_sfnt_off0000d154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD154 9896 bytes
SHA-256: 54a190dac0775accfcd2290970f57daf1bcfa67aa8975a8a301adbc951898c4e

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