Malicious PDF — malware analysis report

Static analysis result for SHA-256 834aa3e38a00f929…

MALICIOUS

PDF

69.1 KB Created: 2021-01-27 22:55:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a9576702a97721d77b3d8869971d55d1 SHA-1: e19000448aa2727883448680beeed942fc0e7bcc SHA-256: 834aa3e38a00f929d232e0504a8817493820ae0b0909ec9821f38e9f3ec46977
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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://leonvi.ru/123?utm_term=sony+vegas+pro+13+mega+64+bits PDF link annotation
    • http://ductsunlimitedins.com/tutudezuvrwqp.pdfIn PDF document text
    • https://cdn.sqhk.co/jutigurotow/geicFQR/chicken_invaders_5_full_version_download_android.pdfIn PDF document text
    • http://lisolu.org/manuxozaqkebl.pdfIn PDF document text
    • https://cdn.sqhk.co/tamoravuwera/i0YW3jj/57062906593.pdfIn PDF document text
    • http://instacopyrighthelpteam.com/zombie_diary_1_hackeadoahod3.pdfIn PDF document text
    • https://cdn.sqhk.co/nutewakizi/bjhjbKA/tubinagekir.pdfIn PDF document text
    • http://kewisanoxiv.66ghz.com/59825143911.pdfIn PDF document text
    • https://cdn.sqhk.co/netimupoxojo/higeGie/posarasotigalojebuxabef.pdfIn PDF document text
    • https://cdn.sqhk.co/nazopekujavi/icvhfhc/tech_news_websites.pdfIn PDF document text
    • http://wetepuzasuvuroz.22web.org/90066022717.pdfIn PDF document text
    • https://cdn.sqhk.co/lamiwifa/ijegeig/pencil_in_spanish.pdfIn PDF document text
    • http://genoray.pro/32672502006a45ra.pdfIn PDF document text
    • http://fishing-rods2.club/60910138703lsgt8.pdfIn PDF document text
    • https://cdn.sqhk.co/rolaravez/Bizgege/brave_dungeon_immortal_legend_codes.pdfIn PDF document text
    • http://lightly.store/wood_carving_kitctb8j.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/jujadodedaruxix/adventure_time_season_9_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/vudasopopukexadorojik.pdfIn PDF document text
    • http://pujusojup.epizy.com/41430577118.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_off0000cd28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD28 5968 bytes
SHA-256: b9f605fd999b1bb75630b1d8d2dcce6ed63f0eaeeb67a3a5df6f928a839e38ed
font_01_sfnt_off0000e178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE178 11556 bytes
SHA-256: 4fc9e3d40a605a9d2c1c48cceaf698b27a68d4ba744f64bd6b6e5a769f7d0e42