Malicious PDF — malware analysis report

Static analysis result for SHA-256 05d58bab62a8aafd…

MALICIOUS

PDF

45.7 KB Created: 2020-11-02 13:11:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 398a9020993449b69d9673eed89fad20 SHA-1: ba6d18a7c663e3a43cc75945e1427eb2ba5d5263 SHA-256: 05d58bab62a8aafdf5102d9224aff92eba6d99eb8dc618131678aa97f55e89a7
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, disguised with a lure related to 'Star Wars dnd races'. The ML classifier strongly indicated maliciousness. The primary IOC is the redirector URL, which is likely used to deliver a second-stage payload or phish the user.

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=star+wars+dnd+races In PDF document text
    • https://lilawowawumoxo.weebly.com/uploads/1/3/1/4/131453384/gudakofi-jirunoravo-xiwamun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wilugugo/rudufowo.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/canik_tp9sfx_aftermarket_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d92ced8-5183-400c-88a0-ccc61aca21a9/rogegaxotutal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7405/5063/files/dna_mutations_practice_worksheet_answer_key_biology.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/the_problem_of_pain_cs_lewis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7812/7268/files/i_wish_you_the_best.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/jibinozedow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4eaf2ae5-d7fd-4f2e-84eb-5761cc8a7997/67954635771.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/5e_tinkers_tools_check.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91b2f081-d614-4f3d-bc56-2ab05dd3a5bb/53750615709.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/lodeg.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB7 4728 bytes
SHA-256: 37daa414e6e7ec2670cdf1322211bf4245b6abe438169712252d915c4f0fcd70
font_01_sfnt_off00007ac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC5 9852 bytes
SHA-256: 0f2738e7fca774e7719018835b7a743dab41a0dcc16be2e46f514fe5b9895e36
font_02_sfnt_off00009c87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C87 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2