Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ef096caa9a9ba8f…

MALICIOUS

PDF

71.9 KB Created: 2021-03-18 20:36:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: adb26555dd857dab395393ac17bb6ace SHA-1: 70bb796c536d9109ad2def542ad53ac6a14537a1 SHA-256: 5ef096caa9a9ba8f020f2d5cf22a19b8bddd52a60907f939151ad06a2657694b
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://kuzutuzo.ru/award?keyword=celestial+bodies+book+pdf+free+download PDF link annotation
    • https://femukigiterabe.weebly.com/uploads/1/3/2/7/132740239/fafowe.pdfIn PDF document text
    • http://wukixijolori.iblogger.org/92009031047.pdfIn PDF document text
    • https://nekazexupogufeg.weebly.com/uploads/1/3/1/4/131454238/situlopu-lipejokokuxod-gedelujipakoxod-nipewimubek.pdfIn PDF document text
    • http://gajikabe.iblogger.org/deloitte_digital_transformation_framework.pdfIn PDF document text
    • https://rexakutomas.weebly.com/uploads/1/3/0/7/130739652/pajuzelamufusi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a121017b-3fb3-450c-9156-48dd71a9bf80.filesusr.com/ugd/07625c_1583cde876b44ddd8c603ea610430971.pdf?index=trueIn PDF document text
    • https://86908e24-11f3-43a1-9346-bf531f45ee0b.filesusr.com/ugd/97493d_08619fe30b2f4439beb414b1b120861b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nimuwet/geometry_prisms_and_cylinders_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/kindle_paperwhite_file_formats_supported.pdfIn PDF document text
    • http://wukajilese.rf.gd/64580724767.pdfIn PDF document text
    • http://puzexexaniledow.epizy.com/accidents_in_nj_reported_today.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/dk_eyewitness_travel_guide_istanbul_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cadc8d93-c787-4f52-89fd-69b7ea0d7da2/42907433116.pdfIn PDF document text
    • https://2791e1c6-719d-47aa-bdc5-1556df251b63.filesusr.com/ugd/7757c5_c69eb92a1b89471b8214b8040039f639.pdf?index=trueIn PDF document text
    • https://8994dc82-3839-475c-8de5-8afaa5c13229.filesusr.com/ugd/798b5e_a37af3e9d9124e749dfd210b56065675.pdf?index=trueIn PDF document text
    • https://636e06b3-920c-4898-b827-ef778bbbc101.filesusr.com/ugd/40512e_f4520c7e30ca4c5dae8ac31cc203ca51.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/34fc93dc-ca22-4ed2-a48e-10d5e6536d4e/whirlpool_cabrio_dryer_making_loud_humming_noise.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/69645525409.pdfIn PDF document text
    • https://ca108e69-7b6b-43f0-8f16-d96ebeb8a33d.filesusr.com/ugd/79e0dc_717055c384bf424eaef5e9abe425f286.pdf?index=trueIn PDF document text
    • http://kikumofesokir.rf.gd/niklaus_wirth_algorithms_data_structures_programs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71a03b9c-2f06-4a85-85dd-f43c24f1682a/63529788563.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_off0000d7f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F2 5236 bytes
SHA-256: a697beb61c01377173d39e873595d8a8149010fab020d24bc220bd351cc8e076
font_01_sfnt_off0000e9dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DD 11972 bytes
SHA-256: ac7bb585f9d3783492a2b5130f40603d6d1ec7e007ffd0e148b3599344404233

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