Malicious PDF — malware analysis report

Static analysis result for SHA-256 93ba4ae4532a59f0…

MALICIOUS

PDF

66.3 KB Created: 2021-03-03 12:06:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 426bc346cf84500991a78942986ee988 SHA-1: d4d867ecae3958d1461646178865da6550db9052 SHA-256: 93ba4ae4532a59f0e372f70e7274f24ef857f4aaa33c88a55a1854c598ddb0c1
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://dugedepap.ru/wix?keyword=answer+in+complete+sentences+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453730/normal_601719ce6b11d.pdfIn PDF document text
    • http://lojapidabud.mypressonline.com/nomizisujirukotatuka.pdfIn PDF document text
    • http://safilow.iblogger.org/bipija.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447108/normal_601f82232105a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419626/normal_601c89388837a.pdfIn PDF document text
    • http://betmoy56.com/rulezelavu7cmsj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4528915/normal_602e424255db9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458125/normal_5ffba0da74760.pdfIn PDF document text
    • http://xepidenad.scienceontheweb.net/vefepezekafo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465907/normal_602487b6b33bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489843/normal_60014a3005dcb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487208/normal_6037fb7078021.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383445/normal_602a48e43842b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/21615239199.pdfIn PDF document text
    • http://najaxumededalo.rf.gd/59774668846.pdfIn PDF document text
    • http://gupizamowakop.myartsonline.com/how_do_you_thread_a_euro_pro_x_sewing_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/26858553620.pdfIn PDF document text
    • http://kubatejabudebuj.rf.gd/vefinozivaga.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_off0000c763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC763 5108 bytes
SHA-256: ac9f7e42c94428a975adb664c7589cb7811a5248184d93e369ebc33958a88e34
font_01_sfnt_off0000d8ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8AC 10348 bytes
SHA-256: 13df083c0eab3cb2e8367f404b37916acb5d2bf21dc5a58c1a4ad2927e72479f