Malicious PDF — malware analysis report

Static analysis result for SHA-256 fddbdc83b403bf28…

MALICIOUS

PDF

60.5 KB Created: 2020-11-09 06:04:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 716825f70b83aa126c11eca17caac3a2 SHA-1: 2a812f636a07bc04d9ebdf283631ad7102a2b950 SHA-256: fddbdc83b403bf28bc3cfa5536d257cdd7c442f1bcbfc2ff298c0ce77d653e04
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://traffking.ru/aws?keyword=st+james+parish+government In PDF document text
    • https://virataxutepubom.weebly.com/uploads/1/3/0/8/130874282/7994750.pdfIn PDF document text
    • https://jedunifoxawixe.weebly.com/uploads/1/3/4/4/134458330/regoverepowovogexa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366993/normal_5f9749c17f4bc.pdfIn PDF document text
    • https://lozulijulejibog.weebly.com/uploads/1/3/1/8/131857057/difofa.pdfIn PDF document text
    • https://wanuwoziburake.weebly.com/uploads/1/3/4/4/134458428/fusominijoke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449187/normal_5f9f3b794123e.pdfIn PDF document text
    • https://zalawevovupat.weebly.com/uploads/1/3/0/9/130969727/2048914.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368732/normal_5f883fa197df5.pdfIn PDF document text
    • https://joxenawofin.weebly.com/uploads/1/3/4/3/134342561/gitarulidatoparab.pdfIn PDF document text
    • https://sunuzokelegawo.weebly.com/uploads/1/3/4/4/134476032/wazeladevigudit-pukujev-xefar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415769/normal_5fa6a5bfecb49.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e407f220-f96f-4ff8-8c10-4b714b6072d1/66977999574.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_off0000af5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF5B 5440 bytes
SHA-256: 9a921d952ff14623c21493901840e5b54345312f381b606d53f2a8151889a0a8
font_01_sfnt_off0000c1be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1BE 10480 bytes
SHA-256: bfd8bb757c9b305ee00e8a5d8f95bd902ad22078338938a9e0069ca77a0c3a9c