Malicious PDF — malware analysis report

Static analysis result for SHA-256 61e5194c04484261…

MALICIOUS

PDF

63.6 KB Created: 2020-12-21 10:35:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 42f2a24c815fde5213c1c611c8980c33 SHA-1: a664aeb302e483cce8884545ec0eb0567ec0e2d1 SHA-256: 61e5194c04484261eeea7ead692e74e6320500614d5a1824477d92975dd562cc
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 'ggtraff.ru'. This indicates an attempt to redirect the user to a malicious site, likely for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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/123?utm_term=county+sports+zone+lacrosse In PDF document text
    • https://cdn-cms.f-static.net/uploads/4465537/normal_5faab8e9f2541.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444366/normal_5fcb721da4b14.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386609/normal_5fdeab3d1aa5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407576/normal_5f9829ad55613.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418381/normal_5fc236d781759.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382948/normal_5f8dd550a14d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379984/normal_5fccebd64ed92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486994/normal_5fbc7a66737fd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fde7c6a297e1070131a54d5/t/5fdeeb742baf317dc39f8cf8/1608444789233/53055657057.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf67f208845d092482cd1b/1606379511133/28276496560.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4e10e2e34347c705dc52c/t/5fc99e432ae1264a038ca5ec/1607048771536/minecraft_2ds_xl_controls.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b790ce54-1aa6-4531-9e8e-de6f57f4ebad/the_distance_learning_technology_resource_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fde7b11617c13787ca3ef9c/t/5fdec47e7f4e6a336729ebb2/1608434816483/la_boite_a_merveille_analyse.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_off0000ba29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA29 4984 bytes
SHA-256: 0b0df0a6a184fb76aee075a525291e967def932c3f4aa9f40d159910e216475c
font_01_sfnt_off0000cb35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB35 11356 bytes
SHA-256: 454ba0e4f9834de0267ca0c7ce6cc9c44301abeb915dcda63edbdacd21dffbe2

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