Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaebd90aac61eb44…

MALICIOUS

PDF

70.4 KB Created: 2021-01-31 12:16:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f07b2e07ed5a722465ba971af015ddfe SHA-1: f362cdb7b596cc802fe5d2a34a3014882e7d812a SHA-256: aaebd90aac61eb44963f010d55ab833483eed124a8e7d249547fd372c59980eb
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gettraff.ru/wb?keyword=right%20connection%20plumbing%20gas In PDF document text
    • http://vitrinachel.ru/donation_request_form_edmontonjfcw2.pdfIn PDF document text
    • https://titevajap.weebly.com/uploads/1/3/2/7/132741099/6193664.pdfIn PDF document text
    • http://boost-store.net/32950775609k9ihe.pdfIn PDF document text
    • http://medway24.com/78399448727gt61e.pdfIn PDF document text
    • https://cdn.sqhk.co/bezorufuv/jjiEDPg/need_for_speed_no_limits_apkpure.pdfIn PDF document text
    • http://fanogizakelime.iblogger.org/best_crossover_suv_manual_transmission.pdfIn PDF document text
    • https://lurevovikofa.weebly.com/uploads/1/3/4/6/134693735/35fc9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pidosowot.epizy.com/51123497493.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/nowezepadivojuvo.pdfIn PDF document text
    • http://jegegapi.rf.gd/cqc_dental_inspection_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/diaper_size_guide_huggies.pdfIn PDF document text
    • http://zefefudu.rf.gd/free_fonts_for_android_pie.pdfIn PDF document text
    • http://vigopul.epizy.com/pibazud.pdfIn PDF document text
    • http://savexopuzasi.epizy.com/zolemufu.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/best_english_spelling_rules.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_off0000d95a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD95A 5396 bytes
SHA-256: f8fcca9de357286b5ee79fb7a06a67b5faf1856021e503294e9b69b5c35b5382
font_01_sfnt_off0000eb98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB98 9724 bytes
SHA-256: d992e1a57bd38a6053ceb99a948b233e0fa4126f2fab41203cc650db352e4ad7