Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9d5611ff8432385…

MALICIOUS

PDF

73.9 KB Created: 2021-03-16 06:50:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: eb5be40203896df65bea2fe7a4dbb898 SHA-1: 0a354c9d5b8b6436f8f9bdbe55f441cfbba1ae57 SHA-256: e9d5611ff8432385da1963021b72f659e6d449682a0ca77170f2b2a8af081515
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs that lead to disposable hosting and link farms, indicating a malicious intent to redirect users. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to lure users to external sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://druttle.ru/award?keyword=awareness+of+cervical+cancer+pdf PDF link annotation
    • http://sizegivip.22web.org/55434777590.pdfIn PDF document text
    • https://cdn.sqhk.co/bujomuvi/jhhjhHd/mogumegadirugafizisobozo.pdfIn PDF document text
    • http://uscreditinquiry.info/what_kind_of_filter_does_lifestraw_usemwrlz.pdfIn PDF document text
    • http://gawaxoxirerefi.22web.org/towibuwavolizexixuloz.pdfIn PDF document text
    • http://cashbackmoney.info/the_lion_king_full_movie_2019_free_download_tamilrockersl7m0c.pdfIn PDF document text
    • http://atomyimperial.ru/768332990564djk1.pdfIn PDF document text
    • http://kersita.fun/craftsman_tool_box_friction_drawer_slidesqihlu.pdfIn PDF document text
    • http://menbp.online/english_programs_in_usa_for_imgjhfm7.pdfIn PDF document text
    • http://berabujadew.22web.org/molecular_basis_of_inheritance_ncert_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/kapipota/jcgcHgf/rinekorunepivazewiluxejo.pdfIn PDF document text
    • https://cdn.sqhk.co/neseleko/jRMBij6/wajokejemitigegazo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/41acc53b-e444-4875-8617-fcfa98eb6cd1/79605712745.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b04717c4-796a-48c3-a485-5426576d01e5/babivowoxedasovigedefix.pdfIn PDF document text
    • http://gevewodex.epizy.com/78367138001.pdfIn PDF document text
    • http://nuvebuxuloruvux.epizy.com/maths_olympiad_for_class_6_worksheets.pdfIn PDF document text
    • http://tarunom.rf.gd/kartonyono_medot_janji_versi_reggae_ska.pdfIn PDF document text
    • http://konevimojo.epizy.com/free_worksheets_community_helpers.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_off0000e4f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F2 5292 bytes
SHA-256: 2e3fd2ba1e16e5fe267cb875af335210f5d4308a28915cc2c25ae88ac5560e92
font_01_sfnt_off0000f719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF719 10448 bytes
SHA-256: e7602ce6b7e995bcc2bd49b637a3d1df5f4f2b5ac014e7ecf40b344c89d15275

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