Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9c7d26548bb7a35…

MALICIOUS

PDF

71.9 KB Created: 2021-02-20 03:04:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3fd229e264e65d03155771f8f50d6c8f SHA-1: a03f818fd4659bc5d3862dae420efc608df1a4f3 SHA-256: a9c7d26548bb7a3592f8d8666d7834e6b8c48d54dcca32c730153a117ee5e124
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/wix?keyword=your+name+characters+age PDF link annotation
    • https://cdn.sqhk.co/voxoduvi/cjbHja9/call_of_duty_ghosts_xbox_360_digital_download.pdfIn PDF document text
    • http://tasunixupowife.66ghz.com/caravan_sat_nav_app_for_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471467/normal_601692fb16119.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503692/normal_5ff708f6b2e7e.pdfIn PDF document text
    • https://cdn.sqhk.co/mukujoripu/q4wkhcc/26452301568.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470685/normal_60010158b4fdf.pdfIn PDF document text
    • https://cdn.sqhk.co/banuluwopote/oGCgjia/flower_bed_ideas_animal_crossing.pdfIn PDF document text
    • https://cdn.sqhk.co/legusovej/iqhjQa0/xixamejidul.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470830/normal_5ffcd0deb4c8d.pdfIn PDF document text
    • https://cdn.sqhk.co/zowolanazew/yHjfVge/1962111304.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://darewuxopasog.rf.gd/alluvial_soil_images.pdfIn PDF document text
    • http://joriboka.epizy.com/city_skylines_dlc_guide.pdfIn PDF document text
    • http://nipesuvaz.epizy.com/rt-n12_router_default_password.pdfIn PDF document text
    • http://rojuzejuleg.rf.gd/bukesagow.pdfIn PDF document text
    • http://duwagisu.epizy.com/information_system_support_decision_making.pdfIn PDF document text
    • http://vulikoviluxugu.rf.gd/ethiopian_grade_12_biology_student_textbook.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_off0000dda6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA6 5140 bytes
SHA-256: b0b875ddd1f98f67ce23cb06e814c50dd1c3082f544d77ecbbd28114f8a3b662
font_01_sfnt_off0000eef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF5 10436 bytes
SHA-256: 00844b18df731f286ab262dd918ebdbeed90c2afe6c826b3786c8497c1f7357b