Malicious PDF — malware analysis report

Static analysis result for SHA-256 968cfefa41c92e44…

MALICIOUS

PDF

72.2 KB Created: 2021-02-26 02:33:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0f3535bca85321d059085ae4eec4e280 SHA-1: 8163fb290ed5649406367d1445e5536110c033a4 SHA-256: 968cfefa41c92e4412e2c5e0efdb94aa20db49c6d3336720e8d67c9beb3a099e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/award?keyword=darkness+visible+mumford+and+sons+meaning PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459341/normal_5fd8bce0a57d0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467298/normal_5ff5b037cb8b4.pdfIn PDF document text
    • https://cdn.sqhk.co/bomumuxa/e7fJghY/25350130585.pdfIn PDF document text
    • https://wafitaweligu.weebly.com/uploads/1/3/4/5/134587259/tekejekemuni.pdfIn PDF document text
    • https://xojakonokixamu.weebly.com/uploads/1/3/1/1/131164577/borevagejake-vulagam.pdfIn PDF document text
    • http://luzikudejijes.22web.org/birixe.pdfIn PDF document text
    • https://visigeporoxibus.weebly.com/uploads/1/3/4/1/134131572/zugofufinagakid-bajuwediwim.pdfIn PDF document text
    • https://cdn.sqhk.co/lekibefefu/ighchgH/chess_pieces_that_move_on_their_own.pdfIn PDF document text
    • http://xomaweluk.22web.org/entitlement_management_implementation_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/gajerivab/7LjgJPp/pong_3d_unity.pdfIn PDF document text
    • https://tifomuzaki.weebly.com/uploads/1/3/1/1/131163977/wajivekaxovujepo.pdfIn PDF document text
    • https://cdn.sqhk.co/reruzemafow/eheiin4/94989388882.pdfIn PDF document text
    • https://cdn.sqhk.co/mixaluwekitu/aWGhflP/live_stream_nfl_thursday_night_football_free.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/gazitif/jalabaxubijunebunojixezo.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/emulator_psx_pc.pdfIn PDF document text
    • http://jusexezoti.epizy.com/2009_chrysler_sebring_convertible_manual.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_off0000dece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDECE 5488 bytes
SHA-256: 7006e7d0f0fe40e379587b74f5ee6cd676f6c09d15015f8abbbb7a42315c8724
font_01_sfnt_off0000f175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF175 9964 bytes
SHA-256: 9252f52f64d8d31ee42d4788948a7975757c972f0e1f982e528cd2a7441d8b67

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