Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ce8759309028d5c…

MALICIOUS

PDF

83.4 KB Created: 2021-03-04 23:13:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6c6ca777fc968a2434640fdc9a5f32b8 SHA-1: 0c1ba85967b8feddcd795217026cdd7f9965fd81 SHA-256: 4ce8759309028d5ca252be36a719b72ff1e0b138b30e6a9c128a78e4f3a3aad4
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://jumiwimov.ru/aws?utm_term=west+texas+a%2526m+meal+plans PDF link annotation
    • https://dobisuji.weebly.com/uploads/1/3/1/4/131454523/gulinegunujujag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424683/normal_5fd67496637fc.pdfIn PDF document text
    • https://fuwanitawoge.weebly.com/uploads/1/3/4/4/134436239/xisefelokulun.pdfIn PDF document text
    • http://plafond.xyz/the_mortal_instruments_movie_orderu0dbn.pdfIn PDF document text
    • https://kojemugolipoxo.weebly.com/uploads/1/3/4/7/134729864/vapevepemoruvufus.pdfIn PDF document text
    • http://kvrovk.xyz/ev3_sumo_robot_building_instructions8cvff.pdfIn PDF document text
    • http://xviiivbgz.com/norma_oficial_mexicana_nom_015_ssa2_20101nla1.pdfIn PDF document text
    • https://tunedewujanan.weebly.com/uploads/1/3/5/3/135345761/wuzilufiwamuzo.pdfIn PDF document text
    • https://nojiwikimina.weebly.com/uploads/1/3/5/3/135315372/lejitudejotone_gapurufegul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426572/normal_5fdb174f4d280.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bonoburadik.epizy.com/advertising_bold_font.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7be10a0c-1deb-4bba-bfb8-d2b9026c38de/azure_image_to_text_api.pdfIn PDF document text
    • http://zidotafezanu.epizy.com/what_ink_does_hp_envy_5000_series_use.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/esri_arcgis_software_free.pdfIn PDF document text
    • http://basapixukeg.rf.gd/54897729312.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a66771eb-187f-4824-b1b2-e62ed63d9f92/13898527692.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/double_consonant_rule_free_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/p90x_workout_lengths.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_off00010ce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CE9 4632 bytes
SHA-256: 916b9d8b787d30028f4f3d8ad1001de671ffa84ad682b14ef90d3896d326734f
font_01_sfnt_off00011cd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD0 10620 bytes
SHA-256: 4186e58f18b8250c0f03849e5ddd9397e56cf41cb637fd1166b9ba259bce1674