Malicious PDF — malware analysis report

Static analysis result for SHA-256 135a09feec4b0de4…

MALICIOUS

PDF

72.4 KB Created: 2021-03-05 04:11:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 321771ee86e7111c4c02a7ea8798173e SHA-1: 7d36b71a1b1c7c5404417c64dc7ea70150e348f3 SHA-256: 135a09feec4b0de4a1f13ded9c1836f37121723bada30f12e52d15e92e63b950
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://kuzutuzo.ru/123?utm_term=define+high-level+programming+language+in+computer PDF link annotation
    • https://cdn.sqhk.co/salusasopuvi/iejeMZH/wordscapes_level_1581.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453743/normal_6024c37ae72a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426815/normal_60097ca39597f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366344/normal_60220bbd09479.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/CYGujbA/rixazomegamedu.pdfIn PDF document text
    • http://tometifo.getenjoyment.net/voodoo_lab_pedal_power_2_mounting_bracket.pdfIn PDF document text
    • http://my-favshope.online/foguwiterirubavelodqz1yw.pdfIn PDF document text
    • http://stav-games.ru/442370519374hheu.pdfIn PDF document text
    • http://hayatevesigar.online/gdp_and_per_capita_income_of_indiarvnl0.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/BwtihfL/modern_tiny_house_builder_texas.pdfIn PDF document text
    • http://warupipujamoru.sportsontheweb.net/how_to_reset_a_sansa_clip.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/wulotugadag/44650692087.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e14d0074-2af3-4270-9241-9bdeae35c6c2/voxom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6074220-b83c-4200-bdc9-a291f4cab270/77991356074.pdfIn PDF document text
    • http://nukilaba.myartsonline.com/zadujapaju.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/miwerejesunuxawawalovuli.pdfIn PDF document text
    • http://pulitisagot.atwebpages.com/kakizajoraw.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/classification_of_bones_worksheet_answers.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_off0000ddbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDBF 5340 bytes
SHA-256: 51a620bacd00b29c25edf2476cad0d75773d7c8c5d1bc08fbed4055808abc983
font_01_sfnt_off0000efe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE0 10672 bytes
SHA-256: 616b9dae36036a16cf89a8181f50a2dde0386457dc3d167084e92fb5c48eabe8