Malicious PDF — malware analysis report

Static analysis result for SHA-256 43497213d0ab14bc…

MALICIOUS

PDF

36.5 KB Created: 2020-10-10 05:45:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 86039e4fb239ede715c8eacf3759b862 SHA-1: 2cb721b4f591911c58ebf864dddc79a3a1314526 SHA-256: 43497213d0ab14bc17933473447f23606551b5242453b7a1bebb329a934259ad
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL `https://cctraff.ru/strik?keyword=ge+profile+truetemp+oven+manual` is directly associated with this malicious activity. While no scripts were extracted, the PDF structure and the presence of malicious URLs strongly suggest an attempt to lure the user to a compromised site, likely for phishing or further malware delivery.

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://cctraff.ru/strik?keyword=ge+profile+truetemp+oven+manual In PDF document text
    • https://site-1038988.mozfiles.com/files/1038988/voniriturujolomijogo.pdfIn PDF document text
    • https://site-1048454.mozfiles.com/files/1048454/2882340200.pdfIn PDF document text
    • https://site-1036991.mozfiles.com/files/1036991/28139924893.pdfIn PDF document text
    • https://site-1038384.mozfiles.com/files/1038384/94411489975.pdfIn PDF document text
    • http://lalusam.authorajknight.com/uploads/1/3/1/3/131398379/sulurupogejexo.pdfIn PDF document text
    • http://files.algomaumc.org/uploads/1/3/1/3/131397973/3c7ce41eedda.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/17b8fa0e-4441-4105-9fdd-85efe75a7abc/76015041903.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/052572fc-e461-44ca-b541-90e3e603f621/97582340469.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18a5dea5-c16f-4051-80fa-547662e28127/18460357315.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d48f96c-040c-4b3a-8e34-88649569e7d4/53165819710.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_off00005166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5166 4960 bytes
SHA-256: abe62bc429474249f5650d2c1c1f6cfd43f638553450f5d0b272997710270925
font_01_sfnt_off00006239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6239 10272 bytes
SHA-256: 2c953e7885855b7a167f6be9076f332f67ec55b5bbdfa69efb35535a018cfaa1