Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd563a9a93a9d2b…

MALICIOUS

PDF

89.5 KB Created: 2021-03-23 05:52:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: a4c2c34abcc2622091086e27585943c9 SHA-1: 7be507be5670513e7fe9bf78de2883128ed727bd SHA-256: 3dd563a9a93a9d2bf4ecc564910f195bfc2ddf34de5dc414bf9164b51138eb4e
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, likely to trick the user into visiting a malicious site. ClamAV and ML classifiers strongly indicate maliciousness, and the presence of multiple unknown URLs further supports this. No scripts were extracted, but the document structure and embedded URI are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xajibur.ru/strik?utm_term=how+much+is+bluebeam+revu PDF link annotation
    • http://helplnstagramcontact5087423.com/takexoxdcg4o.pdfIn PDF document text
    • http://uose.xyz/piguvupeverazudum108q.pdfIn PDF document text
    • http://organic100.fun/janapada_geethalu_freetl3gl.pdfIn PDF document text
    • http://prizinsta.info/what_is_narrative_structure_in_literaturevcwzl.pdfIn PDF document text
    • http://justamorem.com/bally_slot_machines_repair5pvdw.pdfIn PDF document text
    • http://pl50off.info/54457108431usx3q.pdfIn PDF document text
    • http://jirafka.space/bury_a_friend_piano_sheet_musicooq1d.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/wizomoravazub/vodafone_mobile_wifi_software.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/capitaland_retail_china_trust_annual_report_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/ayesem_koti_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dd5657d-9357-40cf-8d55-34148115948f/96163536895.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/couper_en_2.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/35108146681.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/birkat_hamazon_sefarad.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/love_yourself_answer_album_review.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/manual_homeopatia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1ee4a82-6c59-445e-ab78-54950a51516a/learn_python_for_beginners_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11096b4c-8793-4b63-b92e-447546e985bd/21039437530.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/tojenuzuluma.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/babbu_maan_new_song_all.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/dead_poets_society_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f7610fb-092e-4964-a4ee-02148f4ae173/67272886374.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16ebd6a7-f599-4ced-9053-b6acb646ba4f/perukubajaxip.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/93035557994.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10763 5292 bytes
SHA-256: f587d20583a77e9762a08ca726a078702399676d45cb0f1793bffbd02cd95b89
font_01_sfnt_off0001194e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1194E 12256 bytes
SHA-256: 6e2e07416850c20aa8eac7ce68abce80c0e307580070725699ea419b76de64fe
font_02_sfnt_off00014339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14339 16144 bytes
SHA-256: f6e0f4a25f18a144688c6b7f40519a5efc98c72643b9054f89526e396d9b459d

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