Malicious PDF — malware analysis report

Static analysis result for SHA-256 43ad38c79625fb52…

MALICIOUS

PDF

43.8 KB Created: 2020-11-01 09:01:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8a9314523e2130b629c42efa6ba56b04 SHA-1: 27fcee4d9776638b70f8beece432e8cde6d575d0 SHA-256: 43ad38c79625fb521e9c2aa4ae87eec0579d3aa463e2080702a860baa4f5e78b
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?keyword=dnd+5e+attunement+items'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of a malicious URL embedded within the document content suggests an attempt to redirect the user to a harmful site, likely for phishing or further exploitation.

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://gettraff.ru/aws?keyword=dnd+5e+attunement+items In PDF document text
    • https://biwugina.weebly.com/uploads/1/3/1/1/131163984/4721261.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382617/normal_5f945ac228121.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420902/normal_5f97eb8c700a9.pdfIn PDF document text
    • https://kivuligob.weebly.com/uploads/1/3/0/8/130874143/8381568.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/gafirosivavakumeb.pdfIn PDF document text
    • https://sopowifumerage.weebly.com/uploads/1/3/4/3/134355846/sikefagexawidi.pdfIn PDF document text
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/8679043.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385004/normal_5f8de1f679367.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365542/normal_5f98c834ce142.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/zarelusipofox/bafiwuper.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/6267358983.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/rearrange_pages_smallpdf.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_off0000706a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x706A 4964 bytes
SHA-256: ded9444e6d5a4fb85d71e97a6d1d056d104f3737c551736b27c7703dc8e00e4d
font_01_sfnt_off00008144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8144 9740 bytes
SHA-256: 676c681ab3e4f9561eb1cfa1e8364d1442f40ff75d9f7669559c01c126f80d27