Malicious PDF — malware analysis report

Static analysis result for SHA-256 b50a0c1098ddd970…

MALICIOUS

PDF

66.9 KB Created: 2021-03-04 13:43:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 89dce9b321aa6f35b479539b09597367 SHA-1: 271bcae058d811e2a0f23f46e1125a9817490e50 SHA-256: b50a0c1098ddd970fbff9d09052c4e04958e0b009ed1567e08f49de5db4ede03
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://nipisod.ru/award?keyword=alfred+piano+book+level+1a+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4414161/normal_5ff920b944e47.pdfIn PDF document text
    • https://futiwetag.weebly.com/uploads/1/3/4/3/134367494/d35b226da684b.pdfIn PDF document text
    • https://jaxowukijov.weebly.com/uploads/1/3/0/9/130969500/wajuda.pdfIn PDF document text
    • https://cdn.sqhk.co/lovolipeg/bkMGdN0/nebulous._io_hack_apk_2020.pdfIn PDF document text
    • http://agent-spv.space/70252362700fs45x.pdfIn PDF document text
    • https://buruwezixefekiw.weebly.com/uploads/1/3/0/7/130738548/dezaripixukexarexi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367674/normal_603251a685874.pdfIn PDF document text
    • https://fimuxexepal.weebly.com/uploads/1/3/4/6/134615427/2743301.pdfIn PDF document text
    • https://cdn.sqhk.co/busoleva/bihjcNB/vojaw.pdfIn PDF document text
    • https://cdn.sqhk.co/sawowudin/jFhj95O/fikemudazibuxitawezof.pdfIn PDF document text
    • http://giveaway2020.info/62167870469h8u0u.pdfIn PDF document text
    • https://cdn.sqhk.co/jijatidos/bHJ9zjf/butterfly_stickers_3d.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/mexijegedakol/kajinawujanomarof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e424fce-210e-4e9a-bf7b-f9b98603ba7e/climate_change_effects_on_the_peoples_health_brainly.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/new_calculator_for_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0dcb81c-f8eb-4de8-bfb9-cc0fc6f91ed7/lokakiziwomazanopokol.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_off0000c9c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C0 5164 bytes
SHA-256: 1706225f995bbacaa6b5250773c0ed45513b74b66de363ed69d66526125dc97f
font_01_sfnt_off0000db66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB66 10364 bytes
SHA-256: 9b7f2bd8ec518c0346e6b60d6eb377eef3e03824b6acec911260c8d97429e07e