Malicious PDF — malware analysis report

Static analysis result for SHA-256 849a998353694b22…

MALICIOUS

PDF

57.3 KB Created: 2020-10-26 15:18:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 50ae9f2550b4a3eece24b8ce8c87e0f7 SHA-1: d32e0787e9c324f35adfad7eee4054a38ae2982c SHA-256: 849a998353694b221d45d403134fd767b4fbeb2c0578bcc42a11f25d3e065c10
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/aws?keyword=accident+management+system+pdf In PDF document text
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/ririmof_teximuweviratew_samaleb.pdfIn PDF document text
    • https://norumevi.weebly.com/uploads/1/3/0/9/130969469/lurubuxuf_nuxosa.pdfIn PDF document text
    • https://dagigokes.weebly.com/uploads/1/3/0/7/130739756/1648062.pdfIn PDF document text
    • https://tenikekiso.weebly.com/uploads/1/3/0/7/130775729/7455357.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371809/normal_5f938e056e7f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387428/normal_5f9235ee8e959.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379616/normal_5f8c384fcc433.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375077/normal_5f8bdee150297.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378382/normal_5f8e4e3e268b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393898/normal_5f935db1ce40d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384647/normal_5f956f6b72050.pdfIn PDF document text
    • https://lafetewefovizav.weebly.com/uploads/1/3/4/3/134385578/ed196c5c6.pdfIn PDF document text
    • https://welavofewefose.weebly.com/uploads/1/3/0/8/130813025/79c052.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/metor.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/meletopadolavuxutu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380525/normal_5f8c8cac2d94f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366659/normal_5f8ed9472f9c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388833/normal_5f96b7a97b0cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378852/normal_5f90e2379b425.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380876/normal_5f8bd25a9205f.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/299148e8-6a25-444c-bab0-2402900b6207/mevalobuziwatufuturadib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adfb0c3f-184e-4e1c-aa17-a0d88457f8e3/houses_for_sale_in_eldorado_il.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56e306c1-dc10-4daa-8580-c9b2d6ecfb8f/84737756112.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_off0000a390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA390 5436 bytes
SHA-256: d8530999acdd946ae0454cbbe60b2dde8111b7a72c1e683d391677ce3f43b731
font_01_sfnt_off0000b5fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5FD 9856 bytes
SHA-256: 72f1456459270e1c026fc3918f6781c10934d4007628fd34f27a8659cb3b6862