Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbc63dea4da2ddf7…

MALICIOUS

PDF

69.7 KB Created: 2021-01-23 22:28:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 489e3c301ab05ddc780f475e2eb7073d SHA-1: d1c482d3f9636f64fa2ea74d225bf4e610d81b63 SHA-256: fbc63dea4da2ddf7efdc9d7002e7c32de274a9a8903a4de0c233e1976402ff40
184 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
  • 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://gettraff.ru/wb?keyword=business%20calendar%202%20not%20syncing In PDF document text
    • https://leneguvajetuse.weebly.com/uploads/1/3/1/3/131380977/duxaz-kulusesonuluros-dopuzujubofa.pdfIn PDF document text
    • https://site-1166608.mozfiles.com/files/1166608/italian_love_song_lyrics_in_english.pdfIn PDF document text
    • https://site-1181076.mozfiles.com/files/1181076/swat_team_movie_2017.pdfIn PDF document text
    • https://site-1168218.mozfiles.com/files/1168218/ayyappa_swamy_ringtones_songs.pdfIn PDF document text
    • https://site-1174236.mozfiles.com/files/1174236/45263512153.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481270/normal_5fee46f8af628.pdfIn PDF document text
    • https://site-1175371.mozfiles.com/files/1175371/35552933678.pdfIn PDF document text
    • https://site-1180062.mozfiles.com/files/1180062/product_label_design_templates_psd.pdfIn PDF document text
    • https://site-1173730.mozfiles.com/files/1173730/98133426597.pdfIn PDF document text
    • https://site-1166051.mozfiles.com/files/1166051/kofuganovikepodi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503692/normal_5fe0326032001.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453901/normal_5fe517bcd30f8.pdfIn PDF document text
    • https://site-1168081.mozfiles.com/files/1168081/romujuzowaro.pdfIn PDF document text
    • https://site-1168078.mozfiles.com/files/1168078/cerebral_palsy_powerpoint_templates.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/suxiweke/grid_template_repeat.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/colons_and_semicolons_worksheet_answers.pdfIn PDF document text
    • http://vufagozujidivu.epizy.com/waverley_school_6th_form.pdfIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/worepilevamoxibexomi.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_off0000d30c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD30C 5388 bytes
SHA-256: 588fc4cdf8897c046e2ee01c39822784de9ce9ec2e029622105de58315fb775a
font_01_sfnt_off0000e57b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE57B 10596 bytes
SHA-256: cbc74c6c722e886ce1c29b02edd6839098bf639adfc35b716b15305836fda12f