Malicious PDF — malware analysis report

Static analysis result for SHA-256 64571bf996cd402f…

MALICIOUS

PDF

71.8 KB Created: 2021-02-26 15:53:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 89ee5d8fb0a4320ae321c405e42b23d0 SHA-1: dc0569180434aae10426a52accf8a41c02260400 SHA-256: 64571bf996cd402f577f4c04810b8a8a18b456d763199fd03dd67ec96aa84e8a
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://jottigo.ru/wix?keyword=geometry+common+core+chapter+10+review+answers PDF link annotation
    • http://leopolds.space/11157481306bmr8r.pdfIn PDF document text
    • http://gisoboxizaza.mygamesonline.org/94568886330.pdfIn PDF document text
    • https://cdn.sqhk.co/rapedipular/gV4ihhe/52134317430.pdfIn PDF document text
    • http://lovechat24.club/kipinatu9tsa5.pdfIn PDF document text
    • https://cdn.sqhk.co/pirujezexod/kzjeohd/70523034515.pdfIn PDF document text
    • http://ulekschool.online/godasekijibs17p7.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxoporerom/ihOIicf/riding_motorcycle_on_highway_for_first_time.pdfIn PDF document text
    • http://nazhivy.net/calendarul_ortodox_pe_stil_vechiwjsrg.pdfIn PDF document text
    • https://cdn.sqhk.co/joxomawezu/rHjbDcS/human_heart_3d_model_free.pdfIn PDF document text
    • http://abzac.me/95321375052oqpjs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422386/normal_5fcf7ccbedb41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486035/normal_5fd8867bec147.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421613/normal_60188b9dece99.pdfIn PDF document text
    • http://copyrighthelpcentral.com/10_000_reasons_matt_redman_lyrics_and_chordsz9fmx.pdfIn PDF document text
    • http://koreanluxe.com/bouncy_chair_babyoshyf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.fontrix.comhttp://www.nhncorp.comIn PDF document text
    • https://s3.amazonaws.com/juduk/34639031072.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D7 5620 bytes
SHA-256: 39b570890b56d4fb3cf43d8de85c6356cece14ea9107b0471912b0f9e95dca2c
font_01_sfnt_off0000e3ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3EC 10692 bytes
SHA-256: 7e05635f01497f6f48a23d5e13f2d00a4b572ad6c11457bb0b3545e73c1b3ac1
font_02_sfnt_off0001089d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1089D 2072 bytes
SHA-256: 9694f1dd22230d2bd019691d6045c1608fe576088d4789ec8d7661b4e8256c88