Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b79d56961a20fec…

MALICIOUS

PDF

72.2 KB Created: 2021-02-05 23:11:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c5f1e9b9ab8e0a5324c550a9f3d133bc SHA-1: da7bfcc2509d850f7cbf1b23a350470a7387a4e1 SHA-256: 2b79d56961a20fecf12d235429a437d574ec6dadd303d535086d16480967919e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://baarspo.ru/wb?keyword=les%20cellules%20souches%20h%C3%A9matopo%C3%AF%C3%A9tiques%20pdf PDF link annotation
    • http://scoretdho.best/child_specials_fallout_shelterbtf9p.pdfIn PDF document text
    • http://legalevi.22web.org/pomipejokew.pdfIn PDF document text
    • http://buxuzexutotuf.22web.org/fukijikom.pdfIn PDF document text
    • http://fegudifo.22web.org/queen_flannel_sheets_costco.pdfIn PDF document text
    • https://cdn.sqhk.co/sepunaro/jjhqvia/hakuouki_season_1.pdfIn PDF document text
    • https://cdn.sqhk.co/joxipadij/fWdjhVJ/meetme_apk_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/datimemovuko/5Dgfhjl/naat_flute_ringtone_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/pomiziluda/lZhd60u/13448452787.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457861/normal_5ffa3eb58ed9e.pdfIn PDF document text
    • https://cdn.sqhk.co/jivaduzar/XRS1g5q/nautical_life_latest_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366014/normal_5fe9dbd5a22ab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fenigubigona.epizy.com/special_attestation_reporting.pdfIn PDF document text
    • http://nudenagazosizav.epizy.com/lifusoda.pdfIn PDF document text
    • http://bifakafuwal.rf.gd/argentometri_metode_volhard.pdfIn PDF document text
    • http://vedudide.rf.gd/fractions_and_decimals_worksheets_8th_grade.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_off0000d87f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD87F 5564 bytes
SHA-256: debf7da3dcf61b06675def4056e12ba7c8d726ca51f16499628ecaede3237d63
font_01_sfnt_off0000eb09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB09 12116 bytes
SHA-256: 745e844da053254333568790d5428f7b1f60f982abe87a6f5c9e68ed16c5f6aa