Malicious PDF — malware analysis report

Static analysis result for SHA-256 e84a80f281151f8a…

MALICIOUS

PDF

77.3 KB Created: 2021-02-27 12:02:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: ed4bac4003eb1fe4a2ddd8940c519bf9 SHA-1: f873888815c9c956f72f84fadcd6d6f43da47eab SHA-256: e84a80f281151f8a0463e4bd4cef22bd325febf99d410a01f68350cc1dfe1b74
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for a specific product, likely to trick the user into clicking it. ClamAV and ML classifiers strongly indicate maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect the user to a malicious site, potentially for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/award?keyword=petsafe+wireless+pet+containment+system+replacement+parts PDF link annotation
    • https://cdn.sqhk.co/vozeseseber/h3z0Bg5/38521025092.pdfIn PDF document text
    • http://lakshmi-store.ru/zaxuropbr6gi.pdfIn PDF document text
    • http://replyua.site/kokizasixacj0y3.pdfIn PDF document text
    • http://micrometer25bill.site/xuzirepazixudoraxakumaddjj7.pdfIn PDF document text
    • http://dkmz1.club/saxefekededusuvowijewu8a24o.pdfIn PDF document text
    • http://egosikenclub.com/warhammer_total_war_2_lizardmen_campaign_guidec3968.pdfIn PDF document text
    • https://cdn.sqhk.co/tamejenonisi/gd6jcje/konujax.pdfIn PDF document text
    • https://cdn.sqhk.co/mobirewin/ekQhhid/what_form_of_government_is_australia.pdfIn PDF document text
    • http://onlineeshop24.xyz/jofutog0x66b.pdfIn PDF document text
    • http://wspring.space/little_house_on_the_prairie_season_7_episode_23uty0y.pdfIn PDF document text
    • https://cdn.sqhk.co/nupasoxure/3ghjQ8L/menud.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/midipes/janibevu.pdfIn PDF document text
    • http://rezemefu.rf.gd/duka_hithena_adara_wadan_sinhala.pdfIn PDF document text
    • http://sutekotuluzuwed.rf.gd/juzonotawitekipega.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/black_letter_law.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/structure_of_the_earth_worksheet_ks2.pdfIn PDF document text
    • http://peronilekovo.rf.gd/blue_cross_federal_medication_prior_auth_form.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/68849386096.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/my_airtel_app_bd_apkpure.pdfIn PDF document text
    • http://mujuvuxi.epizy.com/english_language_learners_science_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/37528475948.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_off0000e30b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30B 5356 bytes
SHA-256: 57e31184cc50ebb35d21f6791547202e52aad33fb7e7371114210f54e1bb2a61
font_01_sfnt_off0000f549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF549 15452 bytes
SHA-256: 96b102334494553acd29f0dc86bf3743f1884fd541506489005f4bcb8585a69d

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