Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d493c3f81b616db…

MALICIOUS

PDF

66.1 KB Created: 2021-02-02 02:41:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4da9f5e455ea36ada0f0c2ea1e18c5de SHA-1: 338c7efcfc8322c49532be99820661f8fda754a1 SHA-256: 4d493c3f81b616dbc36d3e1f17ca0bd21a48f12a336aad26f41ed001d86f030c
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://jottigo.ru/123?utm_term=soaring+flight+manual+pdf PDF link annotation
    • http://nuzadovokebin.iblogger.org/34042528281.pdfIn PDF document text
    • http://wazasutosas.iblogger.org/puffin_browser_for_windows_xp_free.pdfIn PDF document text
    • https://sojujigun.weebly.com/uploads/1/3/0/9/130969910/vasinugap-supazogivapu-mejefogotitufut-konezokonam.pdfIn PDF document text
    • https://cdn.sqhk.co/sirobuse/oCjjEja/turbo_car_traffic_racing_mod_apk_revdl.pdfIn PDF document text
    • https://popagupo.weebly.com/uploads/1/3/1/4/131407300/bokuwiselu.pdfIn PDF document text
    • https://basitonivi.weebly.com/uploads/1/3/4/5/134584834/digagitin_tuwazunede_vuwevixobamodek_mowuzepeger.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://familule.epizy.com/araba_yar_oyunu_apk.pdfIn PDF document text
    • http://xupasafagimi.rf.gd/frontier_communications_tv_guide.pdfIn PDF document text
    • http://josatagosovux.rf.gd/dezafukanutowuxifata.pdfIn PDF document text
    • http://zagizub.rf.gd/synonyms_for_detailed_report.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/92898950330.pdfIn PDF document text
    • http://diwovofuzeloxu.epizy.com/69185396880.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/tawenajesikader.pdfIn PDF document text
    • http://ruludamena.epizy.com/78806702483.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/chemical_bonding_notes_class_10.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_off0000c46e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC46E 5380 bytes
SHA-256: ab7ec88ba06e7575994575efe563a4e811e52fb9ccb96d85e404b3992304abc2
font_01_sfnt_off0000d68b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD68B 11184 bytes
SHA-256: fd089f610b90d256cd2b5d4fc9d844ee41b1849fd2232a48645784dae71e5c95