Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b6cba05621e6644…

MALICIOUS

PDF

72.1 KB Created: 2021-02-15 22:27:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6d857816f42ea23bbb8fef1f724a2497 SHA-1: 20096d81e873eaaf04d2b1480be88815a46d578d SHA-256: 6b6cba05621e6644ffd63eac9b21b5b19feb8a8a78b16bf6645ceca850f91331
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wix?keyword=stoichiometry+worksheet+%25231+molar+ratio+practice+problems+answer+key PDF link annotation
    • http://creamwalls.space/masonry_wall_constructiontimid.pdfIn PDF document text
    • https://cdn.sqhk.co/puwidebudojo/uiiG5hg/66218661903.pdfIn PDF document text
    • http://kifenefazujiz.iblogger.org/line_drawing_techniques_worksheet.pdfIn PDF document text
    • http://frontglass.xyz/whatsapp_video_calling_for_pcwwp0u.pdfIn PDF document text
    • https://cdn.sqhk.co/tavikalamo/ejeiajf/90555665514.pdfIn PDF document text
    • http://smeh-mif.space/security_deposit_receipt_template_wordgbvix.pdfIn PDF document text
    • http://teplotronic.ru/amplificador_push_pullw9d8p.pdfIn PDF document text
    • https://cdn.sqhk.co/baxemazisod/hhbiijb/63795694449.pdfIn PDF document text
    • http://vipadminler.org/47128480662091lg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494431/normal_5fe15a35df77c.pdfIn PDF document text
    • http://xviiivbgz.com/the_enjoyment_of_music_12th_edition_free_downloadbn4k4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481408/normal_5ffef262e6eda.pdfIn PDF document text
    • http://indital.space/682762974892o5up.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pakemeza.epizy.com/kutty_songs_tamil_film.pdfIn PDF document text
    • http://futuwerelak.epizy.com/vigelubexofegafoteb.pdfIn PDF document text
    • http://kupobazixivev.rf.gd/mumurufonivikef.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_off0000df00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF00 5160 bytes
SHA-256: 8e4c8cdc5a5bcc09d583e333b3ec5fc78cc166d42be8d2a072317fcb963118fe
font_01_sfnt_off0000f07d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF07D 10244 bytes
SHA-256: 711c9adedd2a6b96cc80d93929b7dee96e66de47e58821fd692e4a88b12c452f