Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa3598e57e90c7b5…

MALICIOUS

PDF

71.2 KB Created: 2021-02-28 08:00:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a7249f15ce8c07a35a6651a21db5a438 SHA-1: 00a0fe7af8a27eff81c175684eadd0cd2f7dbf36 SHA-256: fa3598e57e90c7b5b9cf850e32e0eaeee9ce30a95672ba8472ba46768fb8cea0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/award?keyword=when+was+the+fall+of+reach PDF link annotation
    • http://everydays.space/xereraxazif94t.pdfIn PDF document text
    • http://dutilajojav.22web.org/96516998712.pdfIn PDF document text
    • http://tesocoin.online/getting_check_engine_code_without_scannerq3kgm.pdfIn PDF document text
    • http://khanapoorti.com/60892815290ff37c.pdfIn PDF document text
    • https://cdn.sqhk.co/munuluxel/PgQjgy7/sasulilunel.pdfIn PDF document text
    • http://formverifiedbadge.com/mordheim_warband_leveling_guidemcesk.pdfIn PDF document text
    • http://hotloveme.online/android_messages_not_showing_contact_nameh96ls.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408587/normal_600acf2352f67.pdfIn PDF document text
    • https://napolapivu.weebly.com/uploads/1/3/5/3/135303388/7286340.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/rafiralexezol/weekly_meal_planner_calendar_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/jakatasifalexulowobufopo.pdfIn PDF document text
    • http://demunoj.epizy.com/lease_agreement_example_template.pdfIn PDF document text
    • http://buwumipulufi.epizy.com/spinach_quiche_nutrition_information.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_off0000db09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB09 5076 bytes
SHA-256: 613471a08d1dca3f0edfc1ab97da2aa726c4a4b48cb347f4a4bf79177fc7496a
font_01_sfnt_off0000ec5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC5E 10424 bytes
SHA-256: bb5ee2111ebe6ac562f8bf69d5792da0ec77bf7a8df6635ed663648f66a416b2