Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd4abbb7ab233b17…

MALICIOUS

PDF

73.0 KB Created: 2021-02-21 20:08:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3e6ef49e97fabfa127a8f934da33ffac SHA-1: 42993e39b353f474c446a3026681331650b445c2 SHA-256: dd4abbb7ab233b17f88ccc4b0642c75a1fd89003101cde54a543305544865d52
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://druttle.ru/wix?keyword=physical+education+assignments+for+middle+school PDF link annotation
    • http://letnesil.xyz/cause_and_effect_transition_words_worksheet1n43u.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404133/normal_5fd26cd349bab.pdfIn PDF document text
    • https://nusimilanagazi.weebly.com/uploads/1/3/1/4/131454102/6841a3717af192.pdfIn PDF document text
    • http://domensita.fun/acc_aha_guidelines_heart_failure_2017eai98.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456135/normal_6005e2ec80c28.pdfIn PDF document text
    • https://cdn.sqhk.co/mopewedote/eCghohs/36041166063.pdfIn PDF document text
    • https://muwujexowosis.weebly.com/uploads/1/3/1/4/131437891/donujekabeb.pdfIn PDF document text
    • http://tevfikyuce.xyz/cswip_3._2_questions_and_answers3xv9d.pdfIn PDF document text
    • https://xelasukozulete.weebly.com/uploads/1/3/2/6/132681542/858765.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420238/normal_602ece166a084.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481170/normal_5fd67c2437537.pdfIn PDF document text
    • http://b0xberry.online/855863181136fbh3.pdfIn PDF document text
    • https://cdn.sqhk.co/lexijunibul/Hie0HFy/wimugul.pdfIn PDF document text
    • http://lnstagramlivesupportcenter.com/choir_sheet_musiczng37.pdfIn PDF document text
    • https://cdn.sqhk.co/kizajituxab/3jhgfvP/piano_chords_for_beginners_youtube.pdfIn PDF document text
    • http://swiss-gear-top.xyz/88044498189d4px4.pdfIn PDF document text
    • https://vetitigozep.weebly.com/uploads/1/3/1/4/131437709/3567106.pdfIn PDF document text
    • http://naturaitalia.space/affidavit_of_heirship_texas_templateswr01.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000df3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3D 5536 bytes
SHA-256: 1bdf0e5c9818b634ef4303390a7c9bd4a8f2502e1daaa6753313c32785240056
font_01_sfnt_off0000f1f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F7 10736 bytes
SHA-256: 3115848474b9e03f615f14f0917b1f3eead2702e6d6e999f216796788568aaf9