Malicious PDF — malware analysis report

Static analysis result for SHA-256 92069a7b2b929d37…

MALICIOUS

PDF

42.9 KB Created: 2020-10-05 02:28:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6a80391cab22b6c186c4192d820f43ce SHA-1: fbb433415fc7ffd597f63cb68bdc7f31ebd95d4e SHA-256: 92069a7b2b929d37c87f15746c29159c07291bb7fc7baeb32dad6538c8c1b33a
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/pify?keyword=solar+dock+lights+costco In PDF document text
    • http://files.sandrakaygallery.com/uploads/1/3/1/3/131380177/7180694.pdfIn PDF document text
    • http://files.cullyclass.com/uploads/1/3/1/0/131071262/deboxawubetege.pdfIn PDF document text
    • http://tavenago.agventurewmo.com/uploads/1/3/1/4/131453724/zotojokazugiranido.pdfIn PDF document text
    • http://nimolo.barefoottofino.com/uploads/1/3/2/7/132741009/8569925.pdfIn PDF document text
    • http://files.kriswongbarrie.com/uploads/1/3/0/8/130873708/9009782.pdfIn PDF document text
    • http://files.dkg-betadelta.org/uploads/1/3/1/4/131406239/d151692ae42b5.pdfIn PDF document text
    • https://site-1038390.mozfiles.com/files/1038390/tegowapugadadufad.pdfIn PDF document text
    • https://site-1042830.mozfiles.com/files/1042830/90551222184.pdfIn PDF document text
    • https://site-1037120.mozfiles.com/files/1037120/98770548208.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1229/8648/files/kinexatimiweredexeten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8089/9991/files/gasaxosunukoposir.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_off00006937.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6937 5368 bytes
SHA-256: edebbce1e43fc3df4e64b0cd0ca2ea3ffe86758de33f90eceee5fd13873be841
font_01_sfnt_off00007b6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6D 10456 bytes
SHA-256: ed75536afcbc92d140619409d53a326a42ef074538bed375e835ed0e2970d464