Malicious PDF — malware analysis report

Static analysis result for SHA-256 d716c2dfcf1f2c0f…

MALICIOUS

PDF

72.1 KB Created: 2021-03-01 21:39:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fe3255fd79ac8f9b5f745c636580bbd3 SHA-1: 3b69a9b93e55a2447f6094480b51d46582683cf4 SHA-256: d716c2dfcf1f2c0fbf6421056f50bec5483f6a7a735b14ae331598c5e140d50e
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://crophysi.ru/award?keyword=convert+keynote+to+powerpoint+in+windows In PDF document text
    • http://tafakiduwav.scienceontheweb.net/kinuxedid.pdfIn PDF document text
    • https://wipukanutunuk.weebly.com/uploads/1/3/1/4/131437017/2265622.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413368/normal_602b44fd3ef5f.pdfIn PDF document text
    • https://silagonamep.weebly.com/uploads/1/3/1/4/131452845/782869.pdfIn PDF document text
    • https://lowaribopuvege.weebly.com/uploads/1/3/2/8/132814272/tererimil.pdfIn PDF document text
    • https://xixefofitajeres.weebly.com/uploads/1/3/3/9/133999179/takuxubisavigedeteta.pdfIn PDF document text
    • http://jalogeteka.iblogger.org/boss_dd-_7_instruction_manual.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/tisegovofu/nufunofavunetalenupok.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/free_html_css_templates_2018.pdfIn PDF document text
    • http://pepagulax.epizy.com/hp_photosmart_d110_airprint_not_working.pdfIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/46843954465.pdfIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/gufewanuvepuvofolevuw.pdfIn PDF document text
    • http://zubiluwetij.myartsonline.com/the_fallout_netflix_jenna_ortega.pdfIn PDF document text
    • https://s3.amazonaws.com/musokejixami/adobe_photoshop_cc_brush_tool.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_off0000e0e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E3 4932 bytes
SHA-256: e1f508141e30d1be53963d4b36e19d343ad5c81824dc585f91d743e9ee8a8a53
font_01_sfnt_off0000f1db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DB 9824 bytes
SHA-256: 0e7fd8454ddf63271fe07718b2a762a80eb7a17c5a50cfabbf258251b9066e1a