Malicious PDF — malware analysis report

Static analysis result for SHA-256 4118ae5f79cef1e1…

MALICIOUS

PDF

69.4 KB Created: 2021-03-12 05:53:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e7aa9a3c7670a7d5801cdfbc39d9fa49 SHA-1: 15a57a380f1ce95bd2cdd05dc7d9d5d99a29bbba SHA-256: 4118ae5f79cef1e1d867a681c737b6762ef9003a324e577869d95daa65488014
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://golowaki.ru/wix?keyword=red+team+field+manual+review PDF link annotation
    • https://lewugudufe.weebly.com/uploads/1/3/4/6/134668986/2470439.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427783/normal_60252b82cf295.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453344/normal_5fc773744f1d3.pdfIn PDF document text
    • https://texelerozalom.weebly.com/uploads/1/3/5/3/135314582/sugixaj.pdfIn PDF document text
    • http://dafagaketa.sportsontheweb.net/metal_gear_solid_1_ps3_controls.pdfIn PDF document text
    • http://lowufadit.scienceontheweb.net/count_your_blessings_chords.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501810/normal_5fd0f9b905bac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421209/normal_5fcb70bda6f3b.pdfIn PDF document text
    • http://masanakepatarar.iblogger.org/whirlpool_quiet_partner_1_parts_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459791/normal_5fe0e68c65ae3.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/bisapovepizaj/cydia_impactor_ios_10._2.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/25425505476.pdfIn PDF document text
    • http://vuwurolu.rf.gd/rexilepanexikolonari.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23dd1b25-8b31-42ed-9a86-7cff36d8dab8/7173820038.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66785a7c-7f26-4273-bdf4-de1decb15546/books_of_the_bible_list_printable_kjv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2de661c0-bec2-4d90-92d2-0012bd466670/76450055866.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/34734309324.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b426d18c-10f5-405f-8f9c-57dfe731d1e3/dumafavinedonufinited.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_off0000d39a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD39A 5036 bytes
SHA-256: ea0a08cea63e9ad850f50763b260a84b890f1c39637de6938137a2c8895f42c4
font_01_sfnt_off0000e4bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4BD 10512 bytes
SHA-256: 476629efcbb44a42f802f6a3c9b53e5447df08df473ffefff4365d65f7317f82