Malicious PDF — malware analysis report

Static analysis result for SHA-256 f65b9ef6ca97fe29…

MALICIOUS

PDF

65.8 KB Created: 2020-11-27 06:13:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 50d26c6cb47980a57a68373785c9ba15 SHA-1: 158400ca2c393ff9da40447bd00b0935197ab4fd SHA-256: f65b9ef6ca97fe29cda1f7ac67b5bb5bbc59d94517ba26fe0e4c43cf256d9431
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 0.9997

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/strik?utm_term=vocabulary+workshop+green+pdf In PDF document text
    • https://vilewufatavak.weebly.com/uploads/1/3/4/5/134585542/tezosomufojuxit.pdfIn PDF document text
    • https://xigodawi.weebly.com/uploads/1/3/4/4/134464905/sefovonufagawavibuwo.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/xuvamuba/chevrolet_malibu_2016_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/google_chrome_canary_latest_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04076c9d-8b80-402e-a196-9caa8de7fe05/57374579093.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/12618099066.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/973311e1-26b9-46f5-87b1-1f733d1e6e9e/11803985182.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/bible_book_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/250bb0e5-f47c-4709-83a5-58cb9797e12f/kuvorisenoxazopupol.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/94023798302.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a11a6b66-853b-4dec-99c4-434968ad7dea/ferivavomapadijibef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8c3205f-da3d-4d4d-bd88-b3150b1a5d91/56744332829.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_off0000b5b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5B3 5532 bytes
SHA-256: 3dd0e2d4275ec6d3e9ab8c66c6375cdd287bd42e672a1402850d8c5c078bd636
font_01_sfnt_off0000c87a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC87A 10452 bytes
SHA-256: e479654b7622fbf3e0413ff2ce4ac1e40a714c8cdb6499a746c62fd2819f5ffb
font_02_sfnt_off0000ec6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6E 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e