Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f17feeff3030dc5…

MALICIOUS

PDF

42.6 KB Created: 2020-10-31 15:59:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 776071524c959ba9661d2b12c359f537 SHA-1: 1c4990793949a773639abaea66f728b45acf7b21 SHA-256: 0f17feeff3030dc5d7ee5f5c535d759281b78fcdcb82b9e40090486c1dbb10fd
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://ggtraff.ru/wb?keyword=convert%20pages%20to%20pdf', is the primary indicator of malicious intent. While no scripts were explicitly extracted, the nature of PDF redirects often involves embedded JavaScript to facilitate the redirection, hence the inclusion of T1059.007.

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/wb?keyword=convert%20pages%20to%20pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370780/normal_5f8a0995a6b2c.pdfIn PDF document text
    • https://gononazenikemad.weebly.com/uploads/1/3/4/4/134482012/rufafiw_pazupidaweluwoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368991/normal_5f8c822ec91c3.pdfIn PDF document text
    • https://kawuloxegulul.weebly.com/uploads/1/3/4/3/134389306/4613153.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/kitakilesa/bimejodileb.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/3674042170.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9399f2e8-2bed-4267-9f90-ac26494704e3/enable_quicktime_chrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/9593/8967/files/kitovol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5153d3f7-86a9-44a5-bb4a-1bc0f73527dd/general_computer_knowledge_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/39923186307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5209/5898/files/14586557501.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_off000068d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D9 5140 bytes
SHA-256: 40f80e3576da35f1c0531716c91e04a8b0e1f62592221ed71ca9c9f96880c952
font_01_sfnt_off00007a6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A6A 10444 bytes
SHA-256: 8b51d34a03e773917177460cd556fc9621506468495338c3205538e8a3b74722