Malicious PDF — malware analysis report

Static analysis result for SHA-256 49e69f90be63c95c…

MALICIOUS

PDF

77.7 KB Created: 2020-11-14 01:42:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e7befa257463a05ef1eb6debd2fc5270 SHA-1: 7c962f3c82f77bc85a6e463c187f307009dc57c9 SHA-256: 49e69f90be63c95c998645df20a00fe1b76fc7fb580edae016569048d53877a2
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, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the PDF structure and embedded link suggest a malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://traffine.ru/aws?utm_term=words+list+for+spelling+bee+competition+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380080/normal_5f99c2ded3724.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403531/normal_5fa992f516c63.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/bidejonixom/vexalivivar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f3c2ac4-c260-4843-ab64-a319a1a488a1/37021403801.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24b00d14-d59f-4eb6-80b0-3c8fd3e6554a/mogomosukujaje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5eb4a334-8dac-4117-be46-57f82dc0711a/serumurukotopola.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14f8fb8a-365a-42df-b9da-e7072be4d643/46879018299.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/modelumi.pdfIn PDF document text
    • https://s3.amazonaws.com/kalufizefem/morij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ca7e9db-2738-474a-8b4e-ecc0098abebf/26135940690.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/adobe_premiere_pro_cs5_tutorial_free_download.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_off0000f63c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF63C 5420 bytes
SHA-256: c854f34f8fa683f1d6d0f964c4428c7df037f02aaef30d4c845f4d2a1c66e49a
font_01_sfnt_off000108a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108A4 10040 bytes
SHA-256: 4a37dbf2f81aaa194b910bad2c10f72fae0e830fa0b889bf35a0b5b38924351d