Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f97f0756a763509…

MALICIOUS

PDF

51.9 KB Created: 2020-10-03 00:19:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4538d4ba69042182dc3f842568197023 SHA-1: ba7247334fc2ce53b49e41985f61968c44d4849c SHA-256: 7f97f0756a763509a71e34d39e77305b1f258f452bb82e8e0bfde32df13d2f36
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://gettraff.ru/strik?keyword=pok%25C3%25A9mon+3+the+movie+-+spell+of+the+unown+download In PDF document text
    • http://files.novalitchicks.com/uploads/1/3/2/6/132695602/sixagowatij-wosemoxed.pdfIn PDF document text
    • http://titida.myhomesecurity.net/uploads/1/3/1/3/131379833/7517485.pdfIn PDF document text
    • http://files.blastedriveraussies.com/uploads/1/3/1/4/131453990/nepevisarar.pdfIn PDF document text
    • http://files.yournaturals.ca/uploads/1/3/1/4/131438137/remekofowitisejalek.pdfIn PDF document text
    • http://wolirele.innovateheadstart.com/uploads/1/3/2/7/132741214/5030933.pdfIn PDF document text
    • http://files.marayavoicestudio.com/uploads/1/3/0/8/130874276/dovivuk_jewojejonusuxev.pdfIn PDF document text
    • http://mosoboj.thehistoriansquarterly.com/uploads/1/3/0/8/130813554/4153845.pdfIn PDF document text
    • http://files.hepworthnewquaycornwall.com/uploads/1/3/1/3/131384432/b3c8699.pdfIn PDF document text
    • http://files.mochasouthernbelle.com/uploads/1/3/0/8/130873989/sozur.pdfIn PDF document text
    • http://files.ikorta.com/uploads/1/3/1/6/131606540/9070460.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/7d2fe480-ee88-450e-a1a3-bdbdfc97e092/tavabuzifovesazok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc9c8acc-2c86-4875-9137-ab4ef332f890/91872181531.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45dd577a-a2d9-4e33-a7ea-1f0126615b8d/lijifuvukaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ff66f0a-3da5-4ad5-b375-acd4778ce8d5/wuxepokabar.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_off00008982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8982 5740 bytes
SHA-256: f5d61e078787811038489981047986d80fd51cde25b6e6c153903e0bb4139bd7
font_01_sfnt_off00009cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CC3 10472 bytes
SHA-256: 867f5af92626ddaadda9903533275ba10280d15aaf36778fc73dae83d56b7e91