Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b9348a2951c9567…

MALICIOUS

PDF

45.3 KB Created: 2020-11-04 15:52:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fb77fb3995db755e6e6bc5d653ea3e98 SHA-1: dd3d1e31acc7ef5fd7ac678112dd4ffcf72fc44c SHA-256: 6b9348a2951c95676c9a505a50d5c739ef99a322fcdfdb7c850b91f3cf9ce483
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://ttraff.ru/123?keyword=are+court+shows+fake In PDF document text
    • https://pefoduzipim.weebly.com/uploads/1/3/4/3/134371740/9c3f638b54907.pdfIn PDF document text
    • https://gixawixo.weebly.com/uploads/1/3/4/3/134322292/pejemi_tobaraxeniwi_gibefiliwo_vitegaduwutofe.pdfIn PDF document text
    • https://femevidawivuk.weebly.com/uploads/1/3/1/0/131071063/fusejokor-karuvus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417997/normal_5f9bfd1cdb0f3.pdfIn PDF document text
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/da1c46cb5.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/muvojugejoxip/45696996132.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a886821-de79-418a-8420-2e6f9fb536a6/pelizuvawa.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/losobotolemixalilesuge.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/jenaxamufupidakifa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b181991-01fe-42d4-95de-365bfcd5fc0b/54444183808.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_off0000744f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x744F 5084 bytes
SHA-256: 248210f2bf20aaae10cd1e8b4539f9a20f31c12d25b8d5581a0c5f94bf442b73
font_01_sfnt_off000085ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85AB 10220 bytes
SHA-256: ad4207844e849e1174f74e8b5c5022b9e4c8c3494541e7c9165a9398d5fa364f