Malicious PDF — malware analysis report

Static analysis result for SHA-256 05a29ffbf60100f4…

MALICIOUS

PDF

71.0 KB Created: 2021-02-20 10:55:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 741a6252c2ad295ce6d26fdb54c8b770 SHA-1: 59dfcabe40b10a8f7156d4beb0831eff43e812d5 SHA-256: 05a29ffbf60100f402dc9feb69593adb8e09e06ccd054f47b6cf19a3e21e372d
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://yafferge.ru/123?utm_term=how+to+fix+rust+on+my+jeep In PDF document text
    • http://requiremcgood.com/angry_mom_drama_korea_sub_indorft2e.pdfIn PDF document text
    • http://prostotit.site/48262509003r18fj.pdfIn PDF document text
    • http://mobile-media.moscow/migibi6igd1.pdfIn PDF document text
    • https://cdn.sqhk.co/dusujukakal/cheqiig/vorazuwegimajuduwixi.pdfIn PDF document text
    • http://teleporttur.ru/sepsis_2018_definitions_and_guideline_changes0evnj.pdfIn PDF document text
    • http://1offpark.xyz/286336523477j84r.pdfIn PDF document text
    • https://cdn.sqhk.co/lilomovetum/gfRjcgh/pebegavonokijupo.pdfIn PDF document text
    • http://citrus-fruit.space/software_development_engineer_amazon_job_descriptionw2cq3.pdfIn PDF document text
    • http://familyit.info/el_contexto_escolard5hcl.pdfIn PDF document text
    • http://iminn.ru/ziworewidabuvtdt3.pdfIn PDF document text
    • http://mini-cam1.club/glasgow_kiss_sheet_music9vm7i.pdfIn PDF document text
    • http://ejqy.com/50_shades_of_grey_book_box_set74mkb.pdfIn PDF document text
    • http://calipshatngaccs1.xyz/best_buy_gateway_center_brooklynge9ui.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/gatazeromij/cdf_file_converter_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/1566731613.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_off0000da88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA88 5104 bytes
SHA-256: dcac62d913b7ed7ddbc4c2ded2719e87cdb7cb41ac087039daf8089c5ee873c0
font_01_sfnt_off0000ebf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF2 10424 bytes
SHA-256: d6c7853deb78604e01bebf760e3b2a50d84414f263ebf8e04e937a81023c0f1f