Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6a49d2d14f17d9a…

MALICIOUS

PDF

67.6 KB Created: 2020-11-25 15:25:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 37b5d9ecc1fc60541c754c023df11316 SHA-1: 7f5447c99adc656bf8709fd0f3d3a712846f373b SHA-256: d6a49d2d14f17d9a3d0a52aa97f93e9069b2a789ad0fe3714bb42afe57e8339c
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external resources, which is characteristic of SEO link farms used for malicious redirection. The primary URL, 'https://gettraff.ru/wb?keyword=fiske%20guide%20to%20colleges%20online', is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's designed to lead users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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/wb?keyword=fiske%20guide%20to%20colleges%20online In PDF document text
    • https://tivexafo.weebly.com/uploads/1/3/4/3/134348633/katajuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406168/normal_5f91d7ffe6abc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423154/normal_5faa83925e88f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408348/normal_5fbd6b4ff2085.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417023/normal_5f99148e179dc.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/woberiz/43391783105.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/warrant_officer_creed.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/periappendicular_infiltrat.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/arietta_dekor_glass_range_hood_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/81407339932.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_off0000cc5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC5D 4820 bytes
SHA-256: 1d2d3a4a3643efd20df452fc7afeb872fe01192bade7856a322a5976186cd0c3
font_01_sfnt_off0000dce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE4 10972 bytes
SHA-256: 0ef85bbe7a61b4fa35e8888bd6730dae1d0caacda8b1b8cb5bc5e55b4817a5e6

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