Malicious PDF — malware analysis report

Static analysis result for SHA-256 4620519b40acbee5…

MALICIOUS

PDF

69.8 KB Created: 2021-02-25 22:14:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e25750f134045c0393643a64b5618c32 SHA-1: 2a15f402eeb8f5d51b087c7339381a4b5e2b059b SHA-256: 4620519b40acbee501f49c38f12161c851e7b8356acd6321149d62c0976f9e00
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://seumenha.ru/wix?keyword=classical+conditioning+worksheet+part+a PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369331/normal_602f3806b09cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445107/normal_601c798a32050.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449406/normal_5feb1174b0ccb.pdfIn PDF document text
    • http://redirunna.xyz/attack_on_titan_season_4_episode_2_release_date_ukj3mji.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380090/normal_5fe5b64e90982.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450517/normal_601add592173f.pdfIn PDF document text
    • http://patajafurep.mywebcommunity.org/how_to_get_sound_on_acer_monitor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383170/normal_5fd21ac19daf8.pdfIn PDF document text
    • http://tufuwavaziga.mygamesonline.org/xexaseterigogibe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488817/normal_5fcb6846b66bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461207/normal_6037382ac2f46.pdfIn PDF document text
    • http://wssummer.space/nalonexonilovuvibo962ih.pdfIn PDF document text
    • http://art-practice.org/femodaxegukokigojogupafi4l81u.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481676/normal_5fe1d0919fd40.pdfIn PDF document text
    • http://myluckywin.site/multiplication_worksheets_free_grade_5rzv7y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465908/normal_5feebf3f3ffcc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447877/normal_6019a1a5828dd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kadoxosin.atwebpages.com/jack_and_the_beanstalk_the_real_story_full_movie_123movies.pdfIn PDF document text
    • http://gixarewujedel.atwebpages.com/76424506810.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_off0000d4b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B9 5396 bytes
SHA-256: 72df77afef6eee34fb87ec8267a67e626be7392690c22d371e32a1afff6a3996
font_01_sfnt_off0000e718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE718 10184 bytes
SHA-256: 6dd3f6207e70027d7dbf77f785e8d853b522025d3ae285b016a6fa72394dc81e