Malicious PDF — malware analysis report

Static analysis result for SHA-256 b42b30d75a724fa2…

MALICIOUS

PDF

51.1 KB Created: 2020-11-03 10:21:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 955fff8bd4142b19787b44ab10b960fe SHA-1: 26c4e19b8a7d632a5db1cdde73e668bcb4591d98 SHA-256: b42b30d75a724fa220d9dcf16f6fe34a86abe7a8d028d648a3946bc2d40813ed
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is designed to lead users to potentially harmful content. The embedded URL is part of a lure to trick users into clicking, likely for phishing or malware delivery. No scripts were extracted, but the heuristic and URL strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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?keyword=verizon+lg+v10+manual+user+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413986/normal_5f98988082c5c.pdfIn PDF document text
    • https://lopuzidijunusi.weebly.com/uploads/1/3/4/3/134378181/95f10f7281cb9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387933/normal_5fa1000fe93d4.pdfIn PDF document text
    • https://ligexomapaku.weebly.com/uploads/1/3/4/3/134321337/8101986.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378171/normal_5f8a4309a129e.pdfIn PDF document text
    • https://botomaluxezevip.weebly.com/uploads/1/3/4/3/134340767/ed96b9ad22137d.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/xereromejiv-koxozirusoror-moxonujis.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/861d7a6d-4a5d-435d-9fa9-7cfd1a2dc364/78152613189.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e33c6b3-a913-4a3d-b2e1-252d55d1b1d4/50593523114.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3368f37d-1252-4c55-98a6-447c18eb5080/stardew_valley_brutkasten.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2549b7a-6c9e-4831-8ee4-7689a77ad8ae/kibakafivinegine.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_off00008768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8768 5412 bytes
SHA-256: a8f659f762015c10b39fecba6eacbba581d571fb3b8cd420fcfa8fe59fb7c4b5
font_01_sfnt_off000099cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99CF 11100 bytes
SHA-256: da988cf69f0af7bdfd34b06c991a542d4c8b2a3bda16813a21c96603acf523fd