Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f52fdbc3fd6bf9a…

MALICIOUS

PDF

37.7 KB Created: 2020-10-31 21:08:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a30dced60126419bafbaceaf2b74c3ec SHA-1: b02d59825a23328bc521510cca8623a9bbe5c810 SHA-256: 6f52fdbc3fd6bf9a2e05ab48fa4153b1df5a55cbb6bfbf8d0cdbdc969cb4da09
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/123?keyword=no+te+veo+remix+lyrics In PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/ninopotewegiv.pdfIn PDF document text
    • https://wojeribexojuxu.weebly.com/uploads/1/3/1/8/131856158/wonuvu-nufet.pdfIn PDF document text
    • https://busigejog.weebly.com/uploads/1/3/4/0/134017549/limudix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416513/normal_5f990cb026684.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410222/normal_5f98ae0cabda8.pdfIn PDF document text
    • https://nudopimiga.weebly.com/uploads/1/3/1/0/131070212/f8aa2.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lulodegoner.pdfIn PDF document text
    • https://femitinekabel.weebly.com/uploads/1/3/1/4/131437683/22554db2.pdfIn PDF document text
    • https://sutukukibefatu.weebly.com/uploads/1/3/4/4/134486522/pufuxejer-sasopo-mugunenevifezal.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/1/0485/1430/2114/files/spinal_cord_physiology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3290/1789/files/pinnacle_high_school_football_state_championship.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_off0000576a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x576A 4936 bytes
SHA-256: 15fdf56ee767cd88cac2394e768690b240b3178bca32f6806db411135b614fbe
font_01_sfnt_off00006832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6832 9896 bytes
SHA-256: d514384f095acf33f2143e7bec9df37f6e241e0b849261931160fa729569450c

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