Malicious PDF — malware analysis report

Static analysis result for SHA-256 980558deeac6e6cc…

MALICIOUS

PDF

80.2 KB Created: 2021-02-10 16:48:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1caa7504b12f17bd5acc6d1bb3ec9947 SHA-1: 6d831a8d3b4b1bd595f2364bc6827212e9f49ee6 SHA-256: 980558deeac6e6ccc62e5d3287a667574b78e3d5ed37a30040cdc5ceb824fec4
96 Risk Score

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 an external URI pointing to 'druttle.ru' suggests the document is designed to redirect users to a potentially harmful website. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it may contain or leverage JavaScript to facilitate the redirection or exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/aws?utm_term=management+of+diabetes+mellitus+guidelines+2018 PDF link annotation
    • http://shtangelkipokupkiitd.online/muwifatezotavebarn2kq.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/Vjfghja/guberagofebagu.pdfIn PDF document text
    • https://cdn.sqhk.co/kifuzopeko/sCgchjO/kefubedapef.pdfIn PDF document text
    • https://cdn.sqhk.co/xejoxoka/ihihchh/mineral_fusion_nail_polish.pdfIn PDF document text
    • https://cdn.sqhk.co/vawadawuleja/gj8hb5y/hack_dragon_mania_legends_2020_appvn.pdfIn PDF document text
    • https://cdn.sqhk.co/nutewakizi/hezhijc/51164424147.pdfIn PDF document text
    • http://xomapometafa.iblogger.org/jiwusavoxiviva.pdfIn PDF document text
    • http://antileqphh.site/plate_tectonics_free_downloadaicac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zobovobewuw.epizy.com/what_are_the_major_landforms_in_china.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/vixinufibige.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/ten_eyewitness_news_sports_reporter.pdfIn PDF document text
    • http://tumofif.rf.gd/accounting_services_proposal.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/food_pyramid_powerpoint_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/kelinozajozilewuziwaxijal.pdfIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/zufidezafanalevelisafagu.pdfIn PDF document text
    • http://zaravugudag.rf.gd/arrears_of_pay_beneficiary_information.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/adobe_reader_enterprise_msi.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/clash_of_clans_base_design.pdfIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/best_firewall_for_windows_7_free.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_off0000fb97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB97 5796 bytes
SHA-256: b4d4cc4068ef21aa78f1e4f1775aa94b6531bda8d699fab03e4eef8a3846ccbb
font_01_sfnt_off00010f51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F51 10516 bytes
SHA-256: 11a39624be40f87b0a1ff6d8fc8d946aa3c90941f77249a65fc9a82af6991e24

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