Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f8a3b70a929925f…

MALICIOUS

PDF

85.9 KB Created: 2021-03-30 10:45:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: ce93782495a6b5f3dba0c5387b0a3439 SHA-1: bceffc9486ac949d89807f52e827b22331463d69 SHA-256: 8f8a3b70a929925f6aa401067a48a0750c6b558f5c4efc4c6343fc19b6ecb1a0
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were explicitly extracted, the presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

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://lozipotod.ru/wix?keyword=lucas+tune+up+in+a+bottle+vs+seafoam PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4390659/normal_60220e3226333.pdfIn PDF document text
    • https://cdn.sqhk.co/wofutajo/7kijigx/54738220101.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452861/normal_601b6500d7776.pdfIn PDF document text
    • https://cdn.sqhk.co/jimavidozeze/ZSP9iia/46059846618.pdfIn PDF document text
    • http://jujovobima.getenjoyment.net/where_to_buy_bradley_smoker_parts.pdfIn PDF document text
    • http://xelamoxadavas.mywebcommunity.org/episiotomy_procedure.pdfIn PDF document text
    • https://cdn.sqhk.co/mifigatira/W3fgdhe/submariner_jumper_navy.pdfIn PDF document text
    • http://lebedugipul.mywebcommunity.org/80114061176.pdfIn PDF document text
    • http://xufonewujisos.scienceontheweb.net/mutetudilo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503309/normal_605a19a0a23d5.pdfIn PDF document text
    • https://cdn.sqhk.co/wakewafo/dibjfhh/dozejuxipu.pdfIn PDF document text
    • http://pekefosijemibi.sportsontheweb.net/25167908392.pdfIn PDF document text
    • http://nejevefivi.mypressonline.com/89101089351.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375891/normal_6027d9bd98076.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/mejifavo/incremental_budgeting.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/subject_verb_agreement_practice_set.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/wibesagumepenavefikikaz.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/roredigubawiwedivu.pdfIn PDF document text
    • http://fuxunowelujuxa.atwebpages.com/58419856526.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/also_sprach_zarathustra_violin_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/golf_scorecard_template_indesign.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/chaalbaaz_sridevi_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/kugog.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/you_are_the_reason_song_mp4.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/land_sale_agreement_format_in_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/orchestrating_winning_performance_2018.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_off0000f834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF834 8084 bytes
SHA-256: 5a50f773185de0a4842e3187caa41768afcb21041daa8a2b5fd95b50d17bc95c
font_01_sfnt_off0001134c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1134C 5204 bytes
SHA-256: dcf427dad914cf84eb3bf693b5e7c10758da440aa7d464acf3160aefc9280ee9
font_02_sfnt_off00012503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12503 10668 bytes
SHA-256: fc1a92a9bb8dbe05a43668aa21fea1549dfa0d2df4168c9aaf2e6a7eed621ab8

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