Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e35e71d275d9559…

MALICIOUS

PDF

70.1 KB Created: 2021-02-15 07:23:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 165e4f407b87e4aef9465b0222f892d0 SHA-1: 5f4f07af4b1a49458983cb70df64315cdb9a055f SHA-256: 9e35e71d275d9559bd5b14516c2f05d3576073290ba9c358c5617617f6aca6fd
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wb?keyword=human%20body%20worksheets%201st%20grade PDF link annotation
    • http://55571.ru/kazotilexudexazi2enf1.pdfIn PDF document text
    • https://xikematevi.weebly.com/uploads/1/3/4/3/134392378/7078098.pdfIn PDF document text
    • http://uniques.space/wevenivezanifemivuliratvotz.pdfIn PDF document text
    • https://cdn.sqhk.co/gepeduvo/hjmYYgg/tower_running_usa.pdfIn PDF document text
    • http://useraisins.pro/blackbody_radiation_derivationjg6z0.pdfIn PDF document text
    • https://cdn.sqhk.co/zezegawutogu/if4ibZ2/cute_hairstyles_for_long_hair_for_work.pdfIn PDF document text
    • https://cdn.sqhk.co/zegofurop/heLDbgk/switch_pro_controller_pc_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/luwibajik/hffUEhb/monument_valley_utah_map.pdfIn PDF document text
    • http://copyrights-notices-helps.com/what_is_bombay_blood_groupgn9ni.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469374/normal_601744333ee40.pdfIn PDF document text
    • http://secret-empire.ru/89489513104so96t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387035/normal_600eb150eed49.pdfIn PDF document text
    • https://japiravonasuv.weebly.com/uploads/1/3/4/6/134644749/4641759.pdfIn PDF document text
    • http://ersoil.fun/65773322258nqfju.pdfIn PDF document text
    • http://indir-kazan.com/simple_subtraction_worksheets_for_grof561.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468274/normal_60177a2eabbd7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405641/normal_5ffcffa94996d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vojamul.epizy.com/avengers_endgame_theme_soundtrack.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_off0000d4a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A4 5620 bytes
SHA-256: f26f5615a3227ffcc281e56b4a2f4974ad44362e1ec90783307f7fe9b32d6841
font_01_sfnt_off0000e7a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A5 10520 bytes
SHA-256: 0de5d92a8770bd8ba1a2be1e31146fcee45605dee7826112355958adbde39131