Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ad4ddc2b8a6d82a…

MALICIOUS

PDF

72.3 KB Created: 2021-02-20 19:02:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0444f3aa87a64ee2a83e6c0a8972c8a9 SHA-1: 671a8d53ba46f8e2755d6b83e278fdc2fdb5b78c SHA-256: 0ad4ddc2b8a6d82afd3747ff48e6620445fd0ec3f8b4d7a58a87505705787e0a
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/123?utm_term=place+value+games+free+printable In PDF document text
    • https://cdn.sqhk.co/wepunajexiju/eS8JQgh/heart_rate_monitor_apple_watch_5_not_working.pdfIn PDF document text
    • http://avto-document.site/kisurrfjyj.pdfIn PDF document text
    • http://avto-trokot.xyz/ejemplo_de_memorandum_por_inasistenciar9da4.pdfIn PDF document text
    • https://cdn.sqhk.co/libewepigux/jcjcUoW/spirit_riding_free_characters_boy.pdfIn PDF document text
    • https://cdn.sqhk.co/satidaruxami/aDthjgf/bone_crusher_knife.pdfIn PDF document text
    • http://prizinsta365.online/what_are_good_7th_grade_science_fair_projects7qwpn.pdfIn PDF document text
    • http://hookup154.online/pelofanoehtlv.pdfIn PDF document text
    • https://cdn.sqhk.co/gepeduvo/ifEjhhb/60287001003.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393197/normal_602838fa57906.pdfIn PDF document text
    • https://cdn.sqhk.co/sevalaturi/ajbhfLa/9186662484.pdfIn PDF document text
    • http://com-copyrighit.com/331963086717m6pi.pdfIn PDF document text
    • https://cdn.sqhk.co/murafabu/qYSifXS/zagowexadamatugofav.pdfIn PDF document text
    • http://contact-git.top/telugu_academy_b._ed_psychology_books32i08.pdfIn PDF document text
    • https://cdn.sqhk.co/garisuvonuk/hbkd8ms/anime_wallpaper_gif_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387421/normal_600bfdc4d3df9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dc8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC8B 5536 bytes
SHA-256: 2b25dab27eeed746fa906df622f6afe6829f309d36989ad7d2ceb570b1864cdd
font_01_sfnt_off0000ef56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF56 10872 bytes
SHA-256: e124ea297cafc851c447bc1c3486af4307a71597297b95fb6a5b1bbf1b03ab38