Malicious PDF — malware analysis report

Static analysis result for SHA-256 54bf41fef787b133…

MALICIOUS

PDF

72.7 KB Created: 2021-02-19 18:54:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 854f42f1a96671141491c02c23482c24 SHA-1: db07eb0c21689ce2b5e55769d6be2b152c4a7c45 SHA-256: 54bf41fef787b133cd0d6b8e68310d92deebbc58be8acdd36bd34f22113d6439
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wix?keyword=thanksgiving+menu+template+printable PDF link annotation
    • https://wodorolijuzawex.weebly.com/uploads/1/3/4/7/134770742/1993642.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455884/normal_601318de4ca8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392864/normal_5feaf1282c156.pdfIn PDF document text
    • http://4d-5d.com/employee_handover_template_exceldcb89.pdfIn PDF document text
    • https://kukuwusak.weebly.com/uploads/1/3/1/3/131379738/jenikopelukako-xolemobubiroto-zedin-wuragevolav.pdfIn PDF document text
    • http://kaxidabifibag.iblogger.org/kisemuv.pdfIn PDF document text
    • https://jotovaxawunujej.weebly.com/uploads/1/3/1/8/131856347/06beabd.pdfIn PDF document text
    • https://gidiwukos.weebly.com/uploads/1/3/1/3/131381706/c1c30f7.pdfIn PDF document text
    • http://xilelul.iblogger.org/90301782612.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382965/normal_5fe7e10d649dc.pdfIn PDF document text
    • http://bubobimurasawe.iblogger.org/61832231116.pdfIn PDF document text
    • https://cdn.sqhk.co/lapefuxolu/siboNii/lumino_city_gameplay.pdfIn PDF document text
    • https://cdn.sqhk.co/roretuduva/dje2mOO/battle_zombies_game_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424330/normal_5fec03e8a2ce4.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/woxojuxafopuv/tazewerowezobebotepefoz.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_off0000def6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF6 5444 bytes
SHA-256: e8fb3ea7c73ae7e70c5b0aaed526168bccdbe96f99795971e7a5b4fa3825007a
font_01_sfnt_off0000f150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF150 10824 bytes
SHA-256: bf56edc944217e549d087e3b105bdf148dbbc26f08036e9a40eb2f77d29ac942