Malicious PDF — malware analysis report

Static analysis result for SHA-256 0685a54c594b0f42…

MALICIOUS

PDF

68.6 KB Created: 2021-02-13 13:44:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 20d6d5f19d4f3cc9938a7de42c996f88 SHA-1: f890f1491ea9c902860117758d68e3919e191541 SHA-256: 0685a54c594b0f421a2c67af131ea50d395f7bf90652f6c203a8082a558a9e12
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/123?utm_term=yamaha+stryker+workshop+manual PDF link annotation
    • https://cdn.sqhk.co/kominepoli/Qidnyhj/ww2_battle_simulator_mod_apk_unlimited_gems.pdfIn PDF document text
    • https://zaxewunatomilar.weebly.com/uploads/1/3/4/1/134131499/povogigalewevaf-tijixubafozas-xivikage.pdfIn PDF document text
    • https://pumelagu.weebly.com/uploads/1/3/2/8/132814433/pewog.pdfIn PDF document text
    • https://cdn.sqhk.co/losegiro/0Rhh9he/likuxapuledolikexunupa.pdfIn PDF document text
    • https://zibekasosux.weebly.com/uploads/1/3/4/0/134040395/2d36d56237457.pdfIn PDF document text
    • http://tozevikuju.66ghz.com/fuwasivivi.pdfIn PDF document text
    • https://cdn.sqhk.co/modonasuje/p5if2Qf/65451116284.pdfIn PDF document text
    • https://guferewefozitak.weebly.com/uploads/1/3/4/3/134393558/tozumarip.pdfIn PDF document text
    • https://cdn.sqhk.co/mogujawogo/ageiirU/retagumuxikudafopebalax.pdfIn PDF document text
    • https://bokakuvuzojoji.weebly.com/uploads/1/3/4/3/134351808/loloj.pdfIn PDF document text
    • https://cdn.sqhk.co/wojidumezu/jjggcCh/zombie_castaways_star_island_quests.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://duzewinabo.epizy.com/1279308808.pdfIn PDF document text
    • http://limazajot.rf.gd/48698630079.pdfIn PDF document text
    • http://vaxuxosubize.epizy.com/4th_grade_short_story_worksheets.pdfIn PDF document text
    • http://genenapukiral.epizy.com/84606957966.pdfIn PDF document text
    • http://zatugawaxevi.rf.gd/mosojewof.pdfIn PDF document text
    • http://nopuxawox.epizy.com/playfair_display_font.pdfIn PDF document text
    • http://ralemagafi.epizy.com/735223656.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_off0000cd7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD7F 5280 bytes
SHA-256: 04320be8b0c48b442b6f52091745d59c0ed74609ed677c0e24ca1cfc96c28da8
font_01_sfnt_off0000df60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF60 11172 bytes
SHA-256: 6b2515fea621aac07442dfbe2634b05df543cf227f5ab28b584be1d29281a59f

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