Malicious PDF — malware analysis report

Static analysis result for SHA-256 94253ed1969a78f6…

MALICIOUS

PDF

45.7 KB Created: 2020-11-06 20:37:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: ff17ca4784abc7128fe1bd94f2a645f1 SHA-1: ab6c478e5d7ee2370e2de5f7466b97a936e14de2 SHA-256: 94253ed1969a78f696b33663f05ff6c5d04e299e5bd9a2f91047c04a9001c7c7
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://traffking.ru/aws?keyword=fury+parent+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368248/normal_5f87a02a306a3.pdfIn PDF document text
    • https://zemuxarasojutin.weebly.com/uploads/1/3/4/3/134374283/detilonir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413374/normal_5fa53ec05427f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369512/normal_5f9d8a163acb5.pdfIn PDF document text
    • https://gijakumode.weebly.com/uploads/1/3/4/3/134306186/de42b88e27a9c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://pafegum.files.wordpress.com/2020/11/xumakosokidazok.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/rigogarofuw.pdfIn PDF document text
    • https://kagovonokud.files.wordpress.com/2020/11/dekazuxomizugufowedu.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/94587829322.pdfIn PDF document text
    • https://likuzow.files.wordpress.com/2020/11/40264502684.pdfIn PDF document text
    • https://sisiviweze.files.wordpress.com/2020/11/goresosuvufat.pdfIn PDF document text
    • https://tuxabavijig.files.wordpress.com/2020/11/37940387668.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_off00007443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7443 4976 bytes
SHA-256: 577002452b9234d8cc25470f9aa75e0fd74dc715f97519c9390b871544db6c2c
font_01_sfnt_off0000854d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x854D 11052 bytes
SHA-256: 906a7e46370df00230f541dc8a3ba76e4965a7f2f70df0a1b3d6f0b94ff0d126

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