Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbd33143664efb93…

MALICIOUS

PDF

35.9 KB Created: 2020-10-30 09:30:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 80e2e5fca2c8ed9d6754cfb3781de824 SHA-1: f317dfabd1e1a400887e07ef47d109429ed350bc SHA-256: dbd33143664efb931a5e937e472200629e0e4dc31f13ddd3c1ae8b685b7cfc71
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://cctraff.ru/strik?keyword=genie+7055+owners+manual In PDF document text
    • https://sipasegeremiraf.weebly.com/uploads/1/3/4/4/134404187/fawiz-dubefejokedog-pabepiganafob-gusexukajo.pdfIn PDF document text
    • https://dojulukasinu.weebly.com/uploads/1/3/0/7/130776790/9512140.pdfIn PDF document text
    • https://jidukuroji.weebly.com/uploads/1/3/4/0/134013204/1925824.pdfIn PDF document text
    • https://wanezetisozol.weebly.com/uploads/1/3/4/4/134468493/3369009.pdfIn PDF document text
    • https://fozidisevuxife.weebly.com/uploads/1/3/4/3/134356050/cff1492ec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/32998976930.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9904ddb4-923b-4a32-8e96-7aa51d585106/52942590985.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c150d64e-fdb8-4611-a941-919409775427/62485454101.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxuledo/4163828610.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/college_student_autobiography_example.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/pangngalang_pantangi_at_pambalana_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/58652800131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4061/3286/files/81111583524.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05a8ee66-75d2-4cfc-8ccd-21be4027ba04/social_studies_final_exam_8th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/three_line_equal_sign.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3258/3578/files/timolirevedomixazaz.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_off00004d58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D58 5300 bytes
SHA-256: eea74a2fa7d2549d6e18b1afa48d6e5d51d99eeb3073073ea8de2b6acfec2259
font_01_sfnt_off00005f64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F64 9868 bytes
SHA-256: a7aa3e327b4063c916cfb7010d719614b99444f531b41968518e64eb5b7d7ecc