Malicious PDF — malware analysis report

Static analysis result for SHA-256 37323e2984ab1bfc…

MALICIOUS

PDF

46.6 KB Created: 2020-10-15 18:23:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 02d2060349a4d8b4d2628becc8829b8e SHA-1: a58d81d09c1b126ec5fee219d3726a250bbc7424 SHA-256: 37323e2984ab1bfcd42335415f696c5576da1882dbbcffadd478ba5ffb734841
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=keto+reset+diet+plan+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365602/normal_5f87767bb751a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367959/normal_5f87d1dbb53ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367635/normal_5f876c17782f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f8756c6d04f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371266/normal_5f8851be2fe6c.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/665612.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/8c3f11ed.pdfIn PDF document text
    • https://biwugina.weebly.com/uploads/1/3/1/1/131163984/a1690.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_5f8751513d633.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366407/normal_5f871a27ddae8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368977/normal_5f881d54621b2.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/d8a1fcb.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/xewuj.pdfIn PDF document text
    • https://gamupizesusaza.weebly.com/uploads/1/3/1/3/131398140/wuzave.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/3cb113af6.pdfIn PDF document text
    • https://mixorone.weebly.com/uploads/1/3/1/4/131438240/masigofuri.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/c9d53fda-a951-4726-8311-799a6433c748/1772594080.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4162848-cf5c-4bce-a478-d8cd2e98933b/10269076368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8663/3374/files/jawekejaribopuvawivitol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/0748/7384/files/98441690761.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7E 4792 bytes
SHA-256: 076ea3a15ccf442e89c82e9dd1a5976f61dbb3eb1eab7e1765411974efae6813
font_01_sfnt_off00007bd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD6 10440 bytes
SHA-256: 64e8b8a16e4992e91e5a2f6c11b3acc48f93f326cccaf50df76b3440f97170c3
font_02_sfnt_off00009f73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F73 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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