Malicious PDF — malware analysis report

Static analysis result for SHA-256 24720b8ee397a227…

MALICIOUS

PDF

60.5 KB Created: 2020-12-18 06:48:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b1fdbab7f6ea18f2060e549a0a802641 SHA-1: b7c56b70cddc28ea7820deabf1075ef9b9e2eb52 SHA-256: 24720b8ee397a227199af5429e2f844839f4b3914890dbf83de359f4f36ce81c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'ggtraff.ru'. This URL is likely used to lure users to a phishing site or download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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.
  • 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://ggtraff.ru/strik?utm_term=renaissance+charter+school+at+cooper+city In PDF document text
    • https://leketupafap.weebly.com/uploads/1/3/4/5/134527175/e9c0f825ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372355/normal_5f998dfb6b78a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369174/normal_5f88c1ab97726.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463264/normal_5faf35a461b64.pdfIn PDF document text
    • https://zetaxufonepijak.weebly.com/uploads/1/3/4/3/134353616/a516b15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449615/normal_5fa2a2d52e1ab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/dde43244-2c64-430f-97ac-636866b6ddad/56755886674.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/13899899358.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb9f9fe6-cef3-475a-84a4-a804852da94f/mozijataxomidibeganitazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5abb6d2b-fb64-4f27-a5a2-ce417e393617/62816572858.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/fojifofaba.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_off0000aeb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEB2 5132 bytes
SHA-256: f882c252778b646ad6ef8b2d0032d4cd86d72d00e6d0cb047db25f2dab350d15
font_01_sfnt_off0000c02e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC02E 10348 bytes
SHA-256: b4c81eef3f418b6018393119d652b1bc47f9239ec83604599c235001e791eaab