Malicious PDF — malware analysis report

Static analysis result for SHA-256 418e5c5aaa10f364…

MALICIOUS

PDF

71.4 KB Created: 2021-02-18 10:43:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7d9db4e5bd5601b31a60d84c30098acd SHA-1: 9733e4fd774143a0fc799c65b3236ae9e682a310 SHA-256: 418e5c5aaa10f36444d6b63433fd14e283b2c512ea980335d25eaed8bce28004
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://seumenha.ru/wix?keyword=madden+apk+hack PDF link annotation
    • http://zumodaronomana.iblogger.org/31099053700.pdfIn PDF document text
    • https://cdn.sqhk.co/tifobebe/ggigbhc/72857292330.pdfIn PDF document text
    • https://cdn.sqhk.co/ramazunor/yTVnShh/pikalaseduwit.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/eAFEbiC/smart_car_charger_remax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458634/normal_5ff1e757725cb.pdfIn PDF document text
    • https://buserakufazuwus.weebly.com/uploads/1/3/4/0/134097478/2445251.pdfIn PDF document text
    • https://cdn.sqhk.co/movumatoz/schiQLc/jidubiwet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471234/normal_601752d158e62.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/i9jfjd9/soda_dungeon_2_wiki_guides.pdfIn PDF document text
    • http://ferejupaxebul.iblogger.org/cbse_improvement_exam_2019_application_form.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/kugelilizibuwum/3d_text_effect_photoshop_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/50th_golden_wedding_anniversary_invitation_template.pdfIn PDF document text
    • http://tebalakafepikob.rf.gd/14877226421.pdfIn PDF document text
    • http://pidesinuzi.rf.gd/7844134655.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/genetics_practice_problems_simple_worksheet_answers.pdfIn PDF document text
    • http://bolutiso.epizy.com/85930143218.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/99355999078.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_off0000dcd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD4 4924 bytes
SHA-256: 52ec22e0ad83d01042aef3766bc078b03382e25c0738baf7325adfd1794fb502
font_01_sfnt_off0000eda6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA6 10212 bytes
SHA-256: 68a4d7d93be619bb21e6241c49a522aadd2b577cbaaf730d8c983a202bbb321e