Malicious PDF — malware analysis report

Static analysis result for SHA-256 835dfde46268957d…

MALICIOUS

PDF

72.8 KB Created: 2021-02-06 03:42:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0e68ccb50006bb3e9107ae0faa189864 SHA-1: c0ef0fc30a1a98085f5ae6ea70f1239910291879 SHA-256: 835dfde46268957d95a0456be1703c27ede21e7e4c34c6d1b79b9062ec2c80a9
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://seumenha.ru/123?utm_term=lowenfeld%2527s+stages+of+artistic+development PDF link annotation
    • https://cdn.sqhk.co/fipimomozuk/Yphb3hi/water_parks_open_during_covid_in_california.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwozavenu/ZidaMb9/app_locker_iphone_7.pdfIn PDF document text
    • http://boevoenlp.com/convert_dwg_to_dxf_trueviewaahmj.pdfIn PDF document text
    • http://justiciaforjustice.com/74542982548sq4bl.pdfIn PDF document text
    • https://cdn.sqhk.co/bexutavukaro/gcs8idu/469021916.pdfIn PDF document text
    • https://cdn.sqhk.co/nomazotesi/ghjehfG/gegigilawolotojuvove.pdfIn PDF document text
    • https://cdn.sqhk.co/sixepatexup/4Fphath/zuvetenuz.pdfIn PDF document text
    • http://egosikenclub.com/pivituhsbzu.pdfIn PDF document text
    • https://cdn.sqhk.co/vibebexez/iagiifK/food_high_in_vitamin_d_and_iron.pdfIn PDF document text
    • http://vovality.club/73310607966n081o.pdfIn PDF document text
    • https://cdn.sqhk.co/nugutobudan/0Ramheh/29443772093.pdfIn PDF document text
    • https://cdn.sqhk.co/pimepojuti/egijhja/amazon_go_grocery_store_havertown.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466676/normal_5fdf8c8a448e6.pdfIn PDF document text
    • http://kidepokapila.22web.org/soguxopuforofe.pdfIn PDF document text
    • http://wetikufuwigiwox.iblogger.org/atp_challenger_calendar_2018.pdfIn PDF document text
    • http://denizan.com/42984349577ilhnz.pdfIn PDF document text
    • http://nuraramibifowom.22web.org/soveridovidexumogirat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xawedanivewemis.epizy.com/relieving_letter_format_in_english_word.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_off0000dff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF7 5600 bytes
SHA-256: 15705f7254a382e960454f6bb6f3f64e7648a279ca6bad5f18e1b429bb270c3f
font_01_sfnt_off0000f322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF322 10224 bytes
SHA-256: a45d54f2514a8233df55471699659e396ce5c5933a6b82294bf793233ec71ae5