Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ecb519b87dae18c…

MALICIOUS

PDF

69.4 KB Created: 2021-03-10 20:05:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6fbc2544d2b71a046fc84b4b574ba400 SHA-1: 1cd0e9a683b677ea6db05d1600eb639f292f6b28 SHA-256: 2ecb519b87dae18c7f0cf87ca20084d5a44ed62f2b986082e5663411eeb2ca6a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/award?keyword=akuntansi+perbankan+taswan+edisi+3+pdf PDF link annotation
    • https://motuzepiruwilo.weebly.com/uploads/1/3/4/3/134348631/5412737.pdfIn PDF document text
    • http://esclick.pro/dyson_cinetic_big_ball_animal_cylinder_filterm4255.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415783/normal_5ff0aaf6b6f64.pdfIn PDF document text
    • http://doweryklkq.space/nombres_para_nios_2020_de_la_biblianx2iu.pdfIn PDF document text
    • https://vagenovujod.weebly.com/uploads/1/3/1/3/131398358/fimefepu.pdfIn PDF document text
    • https://nizakibete.weebly.com/uploads/1/3/4/3/134386075/b0bb335e59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479691/normal_602d8063751a7.pdfIn PDF document text
    • https://baduzasozem.weebly.com/uploads/1/3/1/4/131407439/somenumodof-jatal.pdfIn PDF document text
    • http://sevastopol.sale/tibatesufudiweteu4f48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427282/normal_6022ad66ef6da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420745/normal_5fed10ee5ad2a.pdfIn PDF document text
    • https://konizalo.weebly.com/uploads/1/3/5/3/135388679/molabobanitukalo.pdfIn PDF document text
    • http://whalesqpa.fun/tadapotalatuvolaxiafqp0.pdfIn PDF document text
    • http://huseyincanx.com/80434948240g3htd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/120151d8-0d3d-4056-86b9-0224c2e1bd25/how_much_do_the_dancing_with_the_stars_get_paid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/581a3a91-9cb6-4795-b1cb-9f782f299977/how_to_factory_reset_lorex_dvr_without_monitor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ee0b48b-5a59-416b-96ba-5ff58c922578/66883757888.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02b05677-e26d-44b2-b539-72dadefb8d38/65068135710.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cd358fe-c0d7-4cf1-a246-2d3614998768/possessive_nouns_worksheets_for_grade_6.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fa257d3-9bd2-48d9-8b4d-506be682019c/nepagififadizuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae3c99b0-617e-4c81-834a-c64d8200093f/parijebafazanuxuzize.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b267ab47-1380-4bfc-b8d1-eaf743deb48e/activities_to_improve_listening_skills_in_the_workplace.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_off0000d321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD321 5452 bytes
SHA-256: 3244b941b2b72c1e809510f2cbd0d138a85ca72bf56273ea913596ff844baa89
font_01_sfnt_off0000e5ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5CA 10152 bytes
SHA-256: 63e5420285f19b24c38cc9177180cadd2006aa894bf5414d1070cd1d69d5e142

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