Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5bb44aaed47152c…

MALICIOUS

PDF

72.7 KB Created: 2021-03-10 18:17:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: f0fed6a3278c9c1996250069bfb976bc SHA-1: 75e725a39ecbe9cc264bb902e042d7ac760eb727 SHA-256: b5bb44aaed47152ced9d9705879bab5160dbbff5cd2ca9842287d9da3e9fbcd0
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/award?keyword=amazing+grace+guitare+pdf In PDF document text
    • https://minibomutax.weebly.com/uploads/1/3/6/0/136011914/selinadixux.pdfIn PDF document text
    • http://the-job.ru/73636355917dit06.pdfIn PDF document text
    • https://voxivunesiru.weebly.com/uploads/1/3/1/4/131407918/b61d6d3116be.pdfIn PDF document text
    • http://justiciaforjustice.com/wiripavz0w6h.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvurero/gjgPqny/trending_hashtags_on_twitter_in_kenya_today.pdfIn PDF document text
    • http://vanlit.ru/how_to_share_business_page_on_facebook8bxt0.pdfIn PDF document text
    • http://reabook.online/33545515303d3j53.pdfIn PDF document text
    • https://zeruxitewisav.weebly.com/uploads/1/3/1/8/131856065/jitewowisi-vamavepumok-fosuxadizomo-pejigojipe.pdfIn PDF document text
    • https://cdn.sqhk.co/dorejewibiz/jehavYq/digital_middle_school_books_about_the_holocaust.pdfIn PDF document text
    • http://idealica-italy.site/wincalendar_november_2016_calendarf0ney.pdfIn PDF document text
    • http://vutisonoj.sportsontheweb.net/stoeger_m3500_choke_for_duck.pdfIn PDF document text
    • http://tebeririz.scienceontheweb.net/82562738157.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/genedesowul/12352539327.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ff6b64f-ff98-46c8-b2ec-06da414024d3/lenisijosemizusi.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/83528382083.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/sepsis_workup_infant_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/257f8c4f-acbb-4022-8986-e600ab54aece/invisible_man_suit_2020_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/92964641485.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62d288c4-2f24-4684-95a0-0eadcf00b580/fawabavovexenexifogozuvi.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/characteristics_of_an_epic_hero_chart_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7175b005-1cf3-4fbf-8039-b6a4dda64727/75000404405.pdfIn PDF document text
    • http://duziroro.myartsonline.com/how_to_write_captions_for_multiple_photos_on_instagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cab29f57-2c52-49fd-941a-808179f6337d/44263156489.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_off0000e0c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C5 5304 bytes
SHA-256: f26369029cb7f468dde5323cc247ff493ec9a8bee1b613a1023bba95c46d1144
font_01_sfnt_off0000f2c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C4 10184 bytes
SHA-256: 0ffa5fc5b7950df3f048a067e2818cb5bc1bd157f115db1d8ba602e7eda5ed3f