Malicious PDF — malware analysis report

Static analysis result for SHA-256 321a845e9a21c49b…

MALICIOUS

PDF

69.5 KB Created: 2021-02-22 22:55:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5b54fc5a8e118f20bd0cfb47223ce5d2 SHA-1: de29718f8bb8feb99e5c185550c18918444f3bd6 SHA-256: 321a845e9a21c49be16309c9a919f35e4acb025e8619a2aab4db56182d49acf7
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://baarspo.ru/aws?utm_term=how+to+draw+anime+girl+faces+step+by+step+for+beginners PDF link annotation
    • https://cdn.sqhk.co/duxajoje/R0hdTx8/gixozezapogatepudesa.pdfIn PDF document text
    • http://opticsystem.website/open_broadcaster_software_full_version_free7bvsb.pdfIn PDF document text
    • https://polovetanofup.weebly.com/uploads/1/3/5/3/135330247/683f5442c6eb.pdfIn PDF document text
    • http://appless.space/girl_scout_way_badge_requirements5wp9f.pdfIn PDF document text
    • https://cdn.sqhk.co/seponidozit/gkrjjIk/archero_account_change_detected.pdfIn PDF document text
    • https://cdn.sqhk.co/womawuxinuge/ejeQ4jj/40564320203.pdfIn PDF document text
    • http://instas.site/namirolwbfif.pdfIn PDF document text
    • https://cdn.sqhk.co/gidowoji/KhjdieK/topenuraxeg.pdfIn PDF document text
    • http://fb-ig-copyright.com/encyclopedia_brown_boy_detective_tv_showrjt9s.pdfIn PDF document text
    • https://lojigimab.weebly.com/uploads/1/3/0/8/130814508/31c8a3be44d9056.pdfIn PDF document text
    • https://cdn.sqhk.co/godivago/qCiivih/football_championship_table_january_2019.pdfIn PDF document text
    • https://kagujovo.weebly.com/uploads/1/3/5/2/135298661/pifumopuxeje_ramejitin_panemivuseda_vonoro.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/nabifovu/gaxepatuwutowuxupokis.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/26807087981.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/sheet_metal_gauge_to_millimeters.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/huskee_riding_mower_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/87432193930.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/wazerigunilo.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_off0000d231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD231 5768 bytes
SHA-256: 49eb061188a2ab6b1e25334f2d4b36e8f835fc52bd3603629a0dd6961f6aee23
font_01_sfnt_off0000e5d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D6 10160 bytes
SHA-256: cd1a1f57ff6121e122bd80848128c1c8fac3815b5adf4d8962113416b8f1a8ad