Malicious PDF — malware analysis report

Static analysis result for SHA-256 f415379a6ddd5947…

MALICIOUS

PDF

77.1 KB Created: 2021-05-15 08:16:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 2ea4af0a65b46f696356cd90e8a09256 SHA-1: 25a44ce61131e1df4cdb92779ea231953abc0520 SHA-256: f415379a6ddd594713ee51257c984abea16f4dbd0aabb484a65c311255e9ca19
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, disguised as information about child development. ClamAV and ML classifiers flagged this PDF as malicious, indicating a phishing or trojan distribution attempt. While no scripts were directly extracted, the presence of external URIs and the nature of the detection suggest the document is designed to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/strik?utm_term=what+is+a+milestone+child+development PDF link annotation
    • http://rajukilodagoje.mygamesonline.org/external_human_body_parts_name_with_picture_in_english.pdfIn PDF document text
    • http://kemutedetabu.scienceontheweb.net/mapamundi_politico_mudo.pdfIn PDF document text
    • https://cdn.sqhk.co/xokebuzizo/iejlUjg/strategy-_proof_social_choice_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/wevafofed/YEhjFtx/lamomazenogazaxopexil.pdfIn PDF document text
    • https://cdn.sqhk.co/maxevurux/gibjgD3/23140874945.pdfIn PDF document text
    • http://fofumumitem.medianewsonline.com/cambridge_primary_review_2020.pdfIn PDF document text
    • http://wupemokabate.scienceontheweb.net/99786995907.pdfIn PDF document text
    • http://laribij.scienceontheweb.net/apprendre_le_russe_lecon_5.pdfIn PDF document text
    • http://vevufilusik.scienceontheweb.net/numeros_romanos_ejercicios.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwaseja/hijgwgc/best_song_quotes_for_instagram_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/xororasomig/LidM2hf/mini_games_servers_for_minecraft_pe.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/sazomo/disney_halloween_coloring_sheets.pdfIn PDF document text
    • http://lumosaneja.onlinewebshop.net/bonafide_student_of_institution_national_scholarship.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/bible_new_testament_audiobook.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/common_core_sheets_brain_teasers_5.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/genotakujasalo.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/filopu.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/2505102121.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/31295667275.pdfIn PDF document text
    • http://visugog.myartsonline.com/automatic_control_engineering_raven.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_off0000f065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF065 5288 bytes
SHA-256: 06cb0211a24bb9b2e7614c7598e047d2b5c7ff4c38dc9956326cf1fa48a34f7f
font_01_sfnt_off00010251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10251 10196 bytes
SHA-256: b3b35ba6fa00de0187a618e462e26d4329725a360bbc7bf1c7179690357a7392

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