Malicious PDF — malware analysis report

Static analysis result for SHA-256 10d1c2aa30c5eda7…

MALICIOUS

PDF

50.7 KB Created: 2020-10-26 06:01:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: df84466f16b20011255e00986cf7453f SHA-1: 790c1a9a37ed9d397c1c435b227eda33bb1fa56a SHA-256: 10d1c2aa30c5eda78328c5ac1325b8801dba77cb4ed6e8b8e1c0055acfd4ccd9
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://cctraff.ru/aws?keyword=apache+poi+tutorials+point+pdf In PDF document text
    • https://gekeforoka.weebly.com/uploads/1/3/1/4/131438206/votameji_woxalubomuvi.pdfIn PDF document text
    • https://rolosakuzorega.weebly.com/uploads/1/3/1/3/131379035/64eac.pdfIn PDF document text
    • https://vajuwapokovis.weebly.com/uploads/1/3/4/3/134361820/kizinutexuvelo_vinobazeboliliz_gonevimivekora_vowos.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/f6f74790.pdfIn PDF document text
    • https://podesasi.weebly.com/uploads/1/3/1/4/131437149/2774461.pdfIn PDF document text
    • https://vaxajiwozoli.weebly.com/uploads/1/3/1/6/131637631/7482988.pdfIn PDF document text
    • https://biwugina.weebly.com/uploads/1/3/1/1/131163984/646a6.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/xezuruxovi.pdfIn PDF document text
    • https://varipejat.weebly.com/uploads/1/3/0/7/130739080/70caceb293d15.pdfIn PDF document text
    • https://koxoganonigowup.weebly.com/uploads/1/3/1/4/131408343/zifiwimin.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008371.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008371.bin)
    • https://uploads.strikinglycdn.com/files/9d7a5947-79c2-4c75-a72b-ab2ec16d7c2b/viwasub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d19c16a7-738e-4f02-ae98-11ebad2f874c/20553486876.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74ca2ccf-3b81-482c-9f59-b4b1cad2a740/73811472455.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/technology_innovation_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/learn_excel_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/tolop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6387abb-36e1-4ff2-9b84-df7431196d0e/girls_showing_panties_videos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8a8821e-ee05-4263-8bd3-162dacff04a5/botujug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/758e9bd9-a95a-4fb5-b24c-02c5c462ea95/regimix.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 extracted file (font_00_sfnt_off00008371.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8371 5232 bytes
SHA-256: 2e4e9c43570fb4db67c96e55c42870a700576a7a16137e494efe5435252f3be8
font_01_sfnt_off0000952e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x952E 12540 bytes
SHA-256: b6c0e326dd64489f2c9e71a2bed053e402f9485c7c570691023f1f7a7de6f663