Malicious PDF — malware analysis report

Static analysis result for SHA-256 923b3efeaffe5209…

MALICIOUS

PDF

73.1 KB Created: 2021-02-14 23:30:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b7ecaa86de3e716ee21fb2aa6c5b17ca SHA-1: 88951c606e06260d835e213c2ec5ae8ad36f2e77 SHA-256: 923b3efeaffe52095588045f61b8ae2ced2ce9daa5c8ad1b24f2b0236dfc3ad3
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/123?utm_term=splash+in+different+words PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368489/normal_5fe50ae4eea03.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/if1ODdG/lifesim_life_simulator_casino_and_business_games.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497110/normal_60044ca0b8006.pdfIn PDF document text
    • https://cdn.sqhk.co/bogulevim/52xQmvr/81406582555.pdfIn PDF document text
    • https://lokawerimi.weebly.com/uploads/1/3/0/7/130776865/nesenemexive_megavov_xasovidala_mifilujezusagud.pdfIn PDF document text
    • http://jidugisukeranav.iblogger.org/dispute_inaccurate_information_on_credit_report.pdfIn PDF document text
    • https://bomejafir.weebly.com/uploads/1/3/4/7/134725936/995350.pdfIn PDF document text
    • http://tifetatujuvib.22web.org/rampton_cqc_report_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373769/normal_5fdc17bc796a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380384/normal_6011b029b1997.pdfIn PDF document text
    • http://jolujunutido.iblogger.org/ernst_and_young_2018_transparency_report.pdfIn PDF document text
    • http://mogoxopedutisaw.iblogger.org/crystaldecisions._crystalreports._engine._dll_10._2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://livexixabev.epizy.com/5739307595.pdfIn PDF document text
    • http://xozelabudizi.epizy.com/53148425370.pdfIn PDF document text
    • http://femolejo.epizy.com/hastelloy_x_data_sheet.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_off0000deb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB7 5324 bytes
SHA-256: 50a3c218b10b12029bef97f0fb38595cdc0dbd7637b62835106e990d17b4010c
font_01_sfnt_off0000f0df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DF 11404 bytes
SHA-256: a5d05c15c0e5bc7eafc94757bf201882b88b71587ab35dbc9c98d109bf442343