Malicious PDF — malware analysis report

Static analysis result for SHA-256 744a18f1542ac7de…

MALICIOUS

PDF

72.7 KB Created: 2021-03-02 05:51:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3e1a108ef5ff3d636c9d9ea325335053 SHA-1: b18519f60b217023dbd5daadf75bfe85a7c2fde1 SHA-256: 744a18f1542ac7def7af279713a3a71c24124b570c87790817aafc63e6c69d2e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/award?keyword=who+do+i+call+to+fix+my+dishwasher PDF link annotation
    • https://cdn.sqhk.co/nuzifixe/Xicghja/10991214605.pdfIn PDF document text
    • http://smm-target.ru/fadenolenemotulitoxekep91g38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368468/normal_5fd672d607cab.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/Nhdhen2/evacuation_map_oregon_clackamas.pdfIn PDF document text
    • https://cdn.sqhk.co/nexetifosam/jaibgf6/munebar.pdfIn PDF document text
    • https://kibowoje.weebly.com/uploads/1/3/0/7/130775027/cb0f3c.pdfIn PDF document text
    • https://nokejulaju.weebly.com/uploads/1/3/4/6/134696540/dasegit-gibuneloru-puwolomumame-wotuxuseke.pdfIn PDF document text
    • http://interior.estate/alucinaciones_y_delirios_librok6mta.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490961/normal_6010e60ec37b2.pdfIn PDF document text
    • http://andyhong.blog/watoxeto03mg0.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/tejuvonixag/55771945531.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/sec_definition_of_research_report.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/53818771639.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/soduliwuwutezagakoreked.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_off0000dfb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB7 5536 bytes
SHA-256: 7397f8e2b6f545edb638d311498eedf7aa5ef0b251c622d6f96f9537bea75276
font_01_sfnt_off0000f286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF286 10316 bytes
SHA-256: 09eb7987e4f9082ab0330575e86fe52af9388aa2f6b4fc172de0f5b98f790b89