Malicious PDF — malware analysis report

Static analysis result for SHA-256 59ad6fc6feff10ea…

MALICIOUS

PDF

78.6 KB Created: 2021-02-20 07:56:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b6d15ad4d9bacfbd6d567cf0481da37c SHA-1: 69a0e43285ea2378d8de923ffecd7d694f987950 SHA-256: 59ad6fc6feff10ea987c85f590c1687a97b8ebf9299d931ad764afb938b7f57c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://seumenha.ru/aws?utm_term=how+to+assess+english+level+esl PDF link annotation
    • https://cdn.sqhk.co/tesolivu/jbbhyHM/granny_square_sweater_vest.pdfIn PDF document text
    • https://dimavuvinidet.weebly.com/uploads/1/3/1/3/131397938/paveredakakire.pdfIn PDF document text
    • https://xaxibilezulaf.weebly.com/uploads/1/3/4/0/134096047/daresudediwake.pdfIn PDF document text
    • https://cdn.sqhk.co/rokatodupi/didieaB/short_film_grants_uk_2020.pdfIn PDF document text
    • https://gejejemimegi.weebly.com/uploads/1/3/4/8/134899280/9406309.pdfIn PDF document text
    • https://cdn.sqhk.co/rebosuvut/gFc46ES/xitisuvegotalido.pdfIn PDF document text
    • https://jinepesel.weebly.com/uploads/1/3/5/3/135346763/7491125.pdfIn PDF document text
    • https://cdn.sqhk.co/xuluriwu/wjjN4ng/zukivaviri.pdfIn PDF document text
    • https://cdn.sqhk.co/jisepozidis/icihieP/imo_video_call_free_download_for_iphone_6.pdfIn PDF document text
    • https://pilonalamajavex.weebly.com/uploads/1/3/1/1/131164122/8466881.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/palevijuj/22262274832.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/calc_series_cheat_sheet.pdfIn PDF document text
    • http://vezoxonu.epizy.com/70117188071.pdfIn PDF document text
    • http://pubitawiwinas.rf.gd/banajegeramoje.pdfIn PDF document text
    • http://volowunodevikel.rf.gd/9433867428.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_off0000f681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF681 4964 bytes
SHA-256: d13ca45c942135bb72f7450a87200e01d1771ae55a3e00255f6e34834c69b93f
font_01_sfnt_off0001077c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1077C 11212 bytes
SHA-256: 4531cfbd5c495c5eb86b431ad57501f89adcf64b535f878adf9674747028972c