Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a717dd8700842b1…

MALICIOUS

PDF

54.3 KB Created: 2020-11-09 11:45:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 41f0e05b2ce6c1d92e08b720fbc2a8a1 SHA-1: 714ac69fbff7fa51cea916f1e1d2b0d13c3ad7f3 SHA-256: 7a717dd8700842b15f740d0ec5ac403ed5f1eeb9cab56ae07d8fd6631c8e3c6a
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=wow+classic+gold+farming+guide+lvl+40 In PDF document text
    • https://nupejaxisolerez.weebly.com/uploads/1/3/4/3/134348845/bikagadelonege.pdfIn PDF document text
    • https://rurujopolobadez.weebly.com/uploads/1/3/4/4/134444805/kivifitutu.pdfIn PDF document text
    • https://mofivekirupu.weebly.com/uploads/1/3/2/7/132740685/lufogu-danik.pdfIn PDF document text
    • https://nixofukotozawe.weebly.com/uploads/1/3/4/3/134313466/0861cd2.pdfIn PDF document text
    • https://wuxurabe.weebly.com/uploads/1/3/4/6/134608123/8641de9a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456663/normal_5fa357273e349.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/wivovisorokinewu.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/c98cc6de-6b17-423a-ace4-106dca641a49/ninixu.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/rpg_guide_book.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_off000093d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93D6 5736 bytes
SHA-256: 3473a28ec404dfaed4ec8924ef23caaed8672eb79a701805e8fce42ff127cdd9
font_01_sfnt_off0000a772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA772 10864 bytes
SHA-256: 6c84fdb66b580659e724e0ba27bfd3cf0423c960ad2940a112c3fb3b6d90052c