Malicious PDF — malware analysis report

Static analysis result for SHA-256 16ae59e139dc40f8…

MALICIOUS

PDF

68.9 KB Created: 2020-12-18 04:02:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 0a1bf56df1d6ee46b4d73ec7aa938c84 SHA-1: 7bce10d86606969d06d0c47312d2ab6b796b84ad SHA-256: 16ae59e139dc40f8a091efc627b43b4df9bb8b6b9e774660a610000bfcc91f72
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://cctraff.ru/strik?utm_term=looney+tunes+babies+show'. This indicates the document's primary purpose is to lure the user to this malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://cctraff.ru/strik?utm_term=looney+tunes+babies+show In PDF document text
    • https://cdn-cms.f-static.net/uploads/4410694/normal_5f9f9a1ce215f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446394/normal_5fcdcb8d70984.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417988/normal_5f9556709f6ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365657/normal_5f8bc29dc2b6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375690/normal_5f8995027c9ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377662/normal_5fbf659c414c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427809/normal_5fd71143ba1c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457572/normal_5fb3f4ae17635.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/cbe3fd39-20a1-4375-985f-d141d0be5c0c/91998723870.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/68865437168.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fc36cf1-cab4-4acd-ad0b-1efb03b7ff7a/groups_process_and_practice_10th_edi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cb4d9e7-95a0-41bb-987f-82012c12c974/words_starting_with_hed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12b9444a-b668-4111-853f-a7d463e4d56d/goropu.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_off0000d197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD197 4920 bytes
SHA-256: 9055ef6e8839b12c09f627a0ebc076b17077c84e83ecd99704035ce0b398f25a
font_01_sfnt_off0000e270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE270 10820 bytes
SHA-256: 0ab2c3163a83988266ddeeb398a0953a1471aa186339ddb9a6710ff0e0fdd822

Open this report in the interactive analyzer, or submit your own file for analysis.