Malicious PDF — malware analysis report

Static analysis result for SHA-256 e01124b6efe0117f…

MALICIOUS

PDF

72.0 KB Created: 2021-02-28 13:41:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d42737899cd2052a969a8fcdcbe96d6c SHA-1: 7758d96850f4ce5882ddb2d5da421fa700b69baf SHA-256: e01124b6efe0117fd0db7fcb980b53a0f97a4031d086587f8b337e5d05f80157
126 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to disposable hosting and are structured as link farms, a common tactic for phishing or distributing further malware. The presence of 'utm_term' parameters in some URLs suggests tracking or redirection for malicious campaigns.

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://jottigo.ru/strik?utm_term=harga+lavender+young+living+5ml PDF link annotation
    • http://gixepabu.22web.org/excel_vba_transpose_entire_sheet.pdfIn PDF document text
    • http://xenalebosob.scienceontheweb.net/9605104141.pdfIn PDF document text
    • https://cdn.sqhk.co/bubuzibiv/igghfhi/element_td_warcraft_3_frozen_throne.pdfIn PDF document text
    • http://suzofovolavuk.scienceontheweb.net/the_american_scholar_emerson_theme.pdfIn PDF document text
    • https://cdn.sqhk.co/duzemata/cW7idja/billie_eilish_agent.pdfIn PDF document text
    • http://bupatinewesep.66ghz.com/tamil_album_songs_list_audio_free.pdfIn PDF document text
    • http://fisareboveda.getenjoyment.net/eat_fit_meal_plan_deutsch_erfahrungen.pdfIn PDF document text
    • https://cdn.sqhk.co/mitugejaxel/R3jgIgf/66379320630.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/acurite_rain_gauge_setup.pdfIn PDF document text
    • http://jiteruruw.sportsontheweb.net/xubal.pdfIn PDF document text
    • https://cdn.sqhk.co/gabixeme/czjeagc/power_warriors_10._5_mod_apk_unlimited_money.pdfIn PDF document text
    • http://xufamorazogubov.sportsontheweb.net/gunibuwi.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/wemupajese/jajuwuvololav.pdfIn PDF document text
    • http://kapirexazi.onlinewebshop.net/how_to_find_each_interior_angle_of_a_regular_polygon.pdfIn PDF document text
    • http://rabatelekovufar.myartsonline.com/gizuzugovogelogevawafu.pdfIn PDF document text
    • http://bemogabidemixu.epizy.com/echo_srm_225_not_running.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_off0000db4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB4A 5212 bytes
SHA-256: 7751edf8598135b41c6c4f721dffbe07ec5c47b98bb3d55a2e0e60792c672dc4
font_01_sfnt_off0000ecff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECFF 11412 bytes
SHA-256: 4e55cedeb3adda2069e6f14cbbf8ce7290c7149c766486827945681b42501635

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