Malicious PDF — malware analysis report

Static analysis result for SHA-256 95167a08b406328f…

MALICIOUS

PDF

70.3 KB Created: 2021-02-01 17:07:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 3fa133a165fa65075aaf6d14627ab50b SHA-1: 9208debeb2c13caa21e916f956ef86ce54891f9d SHA-256: 95167a08b406328f9a501c827b10c3054557239d6291f5598e940bdbfa93d410
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/shook?utm_term=film+quote+quiz+multiple+choice In PDF document text
    • https://static.s123-cdn-static.com/uploads/4452386/normal_5ff9782d3160f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385633/normal_5ff89a8fe9410.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374522/normal_5fd736b83bbde.pdfIn PDF document text
    • http://beamorem.com/tristram_shandy_critical_analysistqoig.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/SQgc6hc/15950708317.pdfIn PDF document text
    • http://strahuemsya.info/free_text_to_speech_readerbelqn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381101/normal_5ffe7e0672088.pdfIn PDF document text
    • http://qiwi-wallet.online/bingo_classic_games_offline_free_downloadg49o8.pdfIn PDF document text
    • http://susurrus.space/22883210390xwwir.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://muzoxed.rf.gd/boboiboy_movie_2_in_english.pdfIn PDF document text
    • http://luturuwuxas.epizy.com/auckland_council_building_consent_form_5.pdfIn PDF document text
    • http://weloridotam.epizy.com/counting_numbers_worksheets_grade_1.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/39132520266.pdfIn PDF document text
    • http://zavipazo.epizy.com/nerujo.pdfIn PDF document text
    • http://pobuwejugu.epizy.com/moxuvuv.pdfIn PDF document text
    • http://zebofazedixa.rf.gd/7924972730.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/18185475089.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/report_on_recent_volcanic_eruption_in_hawaii.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_off0000d578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD578 4820 bytes
SHA-256: 1e57ad710f6c9b2f9a05dfd5c3036f830d3ac3e16713481d0c82b49741ef9774
font_01_sfnt_off0000e5ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5CA 11228 bytes
SHA-256: 3ce5e1fc774434d9fa26346fd6ae450af10b3678a2bc8a170fcdf3280d6ad582