Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ba84cf0fb359baf…

MALICIOUS

PDF

70.0 KB Created: 2021-03-09 19:44:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9ebd7fbdcbe373d19d516692e15af37c SHA-1: 7f7ba1aad95726c037599d594dd721956ad1287c SHA-256: 0ba84cf0fb359bafdb1f99ed99fb594afcd7651a91883ada3b4059b0f3a0eefc
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://midufefew.ru/award?keyword=alliteration+assonance+worksheet+pdf PDF link annotation
    • https://nasaxedinevizuv.weebly.com/uploads/1/3/4/7/134759800/zujeriper.pdfIn PDF document text
    • https://vavunoruluso.weebly.com/uploads/1/3/1/0/131070491/mukenixadebunafogu.pdfIn PDF document text
    • https://lepitedow.weebly.com/uploads/1/3/4/8/134885181/3542274.pdfIn PDF document text
    • http://circulyarkadigital.xyz/python_junit_xml_formatbutix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485807/normal_602afe1593993.pdfIn PDF document text
    • https://lisevududotuwak.weebly.com/uploads/1/3/4/2/134265384/dafesuja_fusipiduda_gerelomexeza_xufebotorukoxav.pdfIn PDF document text
    • http://xuwajofona.iblogger.org/spanish_grammar.pdfIn PDF document text
    • http://sberbank.link/celine_verbeeck_naakttjlmt.pdfIn PDF document text
    • http://segway-wheelchair.ru/86250963441t2rkh.pdfIn PDF document text
    • https://midubumiw.weebly.com/uploads/1/3/5/9/135989619/zuzaveditevidokaguve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457008/normal_6035a99379906.pdfIn PDF document text
    • http://sogikujuwawim.22web.org/ijazat_full_movie_1987.pdfIn PDF document text
    • http://ecoservice-vlad.ru/24374292677c6ob2.pdfIn PDF document text
    • http://bristol-yalta.run/filosofia_para_principiantes_eduardo_del_riobr6e6.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/c7f93449-00b0-4319-9784-92d9e58a879f/distributed_systems_course_mit.pdfIn PDF document text
    • http://natadomemorad.epizy.com/9028061236.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92b88231-9635-4970-81b9-033fedbcd942/8956256025.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c62064f-b078-4f4c-a4f9-d0268c9d4595/systems_engineering_principles_and_practice_second_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20ff686a-6146-4788-be5b-64edadca9b7f/2174240255.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64effe8f-fd6c-46f7-b5f9-3150fb34147e/kavekixadiduxijexan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/892e610f-1875-47f6-b610-3d9d85775204/how_to_unlock_a_lift_chair.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64ffd319-9029-45dc-87de-10933ba1870d/xanapibi.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_off0000d3d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D8 5388 bytes
SHA-256: 96f13af1f59abe2502d4074a3dfc0b3d140fe4bae1033cf041533ff6df347104
font_01_sfnt_off0000e63a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE63A 10536 bytes
SHA-256: 6e7589c366c96d3e9121d4015a247fdbd6baeadf8dea8158c5c55bf8a95ebeb3

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