Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4a26641617feb25…

MALICIOUS

PDF

81.7 KB Created: 2021-04-07 05:05:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 60c95a92546212af28ed8a0d15496e20 SHA-1: b1288ca6487b13fa36717383c522329a626c7a77 SHA-256: d4a26641617feb25006a85e98d50a5b6dbd9aff69596059db56133a9821dee90
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, specifically 'https://mezovuduw.ru/123?utm_term=edf+energies+nouvelles+annual+report+2013', suggests a phishing or credential harvesting attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are commonly used for delivering malicious content or redirecting users to compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://mezovuduw.ru/123?utm_term=edf+energies+nouvelles+annual+report+2013 PDF link annotation
    • https://cdn.sqhk.co/nezerozara/uqkjbxn/2010.pdfIn PDF document text
    • http://mojofaza.mypressonline.com/danugegukavisopul.pdfIn PDF document text
    • https://cdn.sqhk.co/debefuki/hexlQhf/ninjago_characters_kai.pdfIn PDF document text
    • http://jepenufi.getenjoyment.net/what_does_a_contingency_table_show.pdfIn PDF document text
    • https://cdn.sqhk.co/dibitarebizu/UA8hh1S/best_fantasy_romance_books_of_all_time.pdfIn PDF document text
    • http://sawedes.mywebcommunity.org/gomuzixutew.pdfIn PDF document text
    • https://cdn.sqhk.co/ketegobuto/huihggM/werewolf_diy_costume_ideas.pdfIn PDF document text
    • https://cdn.sqhk.co/lomekojop/cNtgfig/rugagadadizujeregu.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
    • https://s3.amazonaws.com/lokijuronig/warhammer_40k_adeptus_custodes_codex.pdfIn PDF document text
    • http://xotopusedewix.myartsonline.com/96353498202.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/ariens_sno_tek_24_oil_capacity.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba18b81b-1130-408d-9b0e-8d994dee963f/the_art_of_tidying_up_folding_shirts.pdfIn PDF document text
    • http://felugibesixe.onlinewebshop.net/lesexigumeta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de295fbe-f095-46b9-9d53-48209ff933e1/cosmos_a_spacetime_odyssey_neil_degrasse_tyson_episode_1.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/64766376119.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/cuales_son_los_valores_eticos.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/google_bug_report_reward.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/fufapegobuku.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/taxuwiximes.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/business_plan_template_xls_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/cotton_bed_sheets_set.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/gore_cardioform_asd_occluder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d16bcffa-2ee4-47d6-b748-cca7166fb599/how_to_activate_dunkin_donuts_gift_card.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/29578916335.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/xemobapunisuvunajameme.pdfIn PDF document text
    • https://s3.amazonaws.com/sejakopa/hp_stream_11-ak0507sa_11.6_laptop_review.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_off0000ed6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED6B 5600 bytes
SHA-256: cab072bfdcd69ca5e361d12ec616a85e6e93944834f0d48ae0038ad2e6e84fe8
font_01_sfnt_off00010090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10090 12856 bytes
SHA-256: b4fad6befda7ba3774337d2c59b02254331c230244e2d3b2327b35403b677c94
font_02_sfnt_off00012b08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B08 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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