Malicious PDF — malware analysis report

Static analysis result for SHA-256 e473ed59d07531a0…

MALICIOUS

PDF

69.5 KB Created: 2021-03-10 00:08:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 798656061db5c88599727c35f8ce8abf SHA-1: f3362c2ddff6d3d81383e26baa8b2eeb136dae1a SHA-256: e473ed59d07531a03f809717d9f7ae83d41bf249f3f2a2b83af18102c64ae280
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://nipisod.ru/award?keyword=streamline+english+connections+workbook+pdf PDF link annotation
    • https://lebilelumebik.weebly.com/uploads/1/3/1/6/131636833/7351eb9194f.pdfIn PDF document text
    • https://gubepukabo.weebly.com/uploads/1/3/0/8/130873841/tenezokiragak.pdfIn PDF document text
    • https://timelasabo.weebly.com/uploads/1/3/4/3/134345700/d95c077.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://vejebuta.rf.gd/75230573501.pdfIn PDF document text
    • http://bafigajunafolen.rf.gd/mamuluwoloneroj.pdfIn PDF document text
    • http://lewuxaxuzodu.rf.gd/zulamafuv.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/66866275608.pdfIn PDF document text
    • http://kemuvatixas.epizy.com/jeffrey_campbell_platform_heels.pdfIn PDF document text
    • http://wofelekupobepo.epizy.com/tiroraxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11993264-be32-4e4b-8fde-bd05f7ba3700/25682873920.pdfIn PDF document text
    • http://mekavebij.epizy.com/asana_create_project_template.pdfIn PDF document text
    • http://bigofufujenu.epizy.com/german_grammar_exercises_with_answers_online.pdfIn PDF document text
    • https://95a57b4d-a24c-4412-bd87-88f4f885d252.filesusr.com/ugd/011e4b_2aa4708d01c24c0e9d6809e6646da3d7.pdf?index=trueIn PDF document text
    • http://zozezofi.rf.gd/sole_elliptical_ratings.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/adobe_air_32.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/diff_between_android_tv_and_smart_tv.pdfIn PDF document text
    • https://91c7bc9f-df77-4dbd-ae51-8bcf521f3e61.filesusr.com/ugd/1df9ea_35b08f44943e4d60aa94b29503b57669.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/975d92a9-72fd-42c7-bc46-5f2ca6e2488d/how_to_write_a_patient_case_report_example.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC419 5756 bytes
SHA-256: 342251498d3c8a4cc5ca23988b622a5829a4e6fdc89cf13e4ebb680fa0658764
font_01_sfnt_off0000d777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD777 10152 bytes
SHA-256: e26d67aecab3d47348f20a4921ad583b6fd2b6955b559ec1d709d6865b0a05c4
font_02_sfnt_off0000fa45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA45 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c