Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b6f72f089aa10c4…

MALICIOUS

PDF

39.9 KB Created: 2020-11-06 12:35:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: a11d75e8f0329c2b91306867960c2419 SHA-1: 75747e8882f2223e71daa0be75d4e1bde525272e SHA-256: 1b6f72f089aa10c4ee4cbf195409181ffe5d10de3dab69072513d1f9e5e42946
94 Risk Score

Malware Insights

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

This PDF document contains a link to a known malicious redirector, indicating an attempt to lure the user to malicious infrastructure. The document body, though heavily obfuscated, contains the URL and keywords related to Monopoly, suggesting a social engineering pretext. The ML classifier also strongly flagged this PDF as malicious.

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://traffine.ru/aws?keyword=monopoly+game+rare+pieces+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387229/normal_5fa14dd9a02ac.pdfIn PDF document text
    • https://fajagewuw.weebly.com/uploads/1/3/4/3/134350503/sopazupokibenozipaju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369793/normal_5f8d26bcbd3ee.pdfIn PDF document text
    • https://zisogojevup.weebly.com/uploads/1/3/1/4/131453725/d5bac063.pdfIn PDF document text
    • https://titenukom.weebly.com/uploads/1/3/4/5/134523185/24f57.pdfIn PDF document text
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/feromedubarova.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378161/normal_5f9f01e019046.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387233/normal_5fa5068adc411.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377656/normal_5f9f9c1cef259.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/8fe0b147-cb00-4801-b0d1-31e5146c4615/69689865759.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7da96459-e05e-4931-aebd-6e3080632afd/69703556377.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a96bdf0-3e22-4597-8e38-33047218a8dd/rubitar.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_off00005c4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4E 5632 bytes
SHA-256: b8082d41156df4fe832baf72cd558fb91e578150c5ae443e2b839f4c9131c5d9
font_01_sfnt_off00006f7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7F 10540 bytes
SHA-256: 4bc7099ef780f12b0c3c0505617172feb64553646fff5feedcf9b3d155003ee9