Malicious PDF — malware analysis report

Static analysis result for SHA-256 c61ec95239050d8a…

MALICIOUS

PDF

63.5 KB Created: 2020-11-02 23:19:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7393dca05f18591d3337e3ea6593c0e8 SHA-1: df53165c643608f8716a99834c947d7a554539c8 SHA-256: c61ec95239050d8aaf37259a939db62d19c31c69a31462e731ba131967997a66
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://gettraff.ru/123?keyword=nespresso+delonghi+lattissima+one+manual In PDF document text
    • https://funebaxap.weebly.com/uploads/1/3/4/3/134399245/298024.pdfIn PDF document text
    • https://mimitokiwunas.weebly.com/uploads/1/3/4/0/134012498/3e1dc0f9b8.pdfIn PDF document text
    • https://dajexave.weebly.com/uploads/1/3/4/3/134352807/moluzonajog.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/zerejibixupav/10646927835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5919/0689/files/direct_from_dell_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aee8d613-c182-45aa-953d-c6c483f8cb7d/21733571554.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2212/1653/files/85866841730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0168/3865/files/libalodigutoludumudemolev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/8905/5910/files/71440651967.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/baby_names_in_tamil_for_girl.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/61871598589.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1086f3f-c32d-497f-b39a-730bdbe512a2/36249198282.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18aaffd1-aedc-4be8-b5fc-08c0f8e4574c/2284129302.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_off0000b935.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB935 5340 bytes
SHA-256: b93c76f5d350c21758085e9f6a71b92bcd13857e9f1a7b116e80157d81333d17
font_01_sfnt_off0000cb36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB36 11640 bytes
SHA-256: 35001f477191ae0b45c14621208d967dd3aa9f64b3c5248ace145380bb6132be