Malicious PDF — malware analysis report

Static analysis result for SHA-256 0271f3c85bd18a15…

MALICIOUS

PDF

77.4 KB Created: 2021-03-22 12:32:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 0f3edd8e574c04a8138eda05a4370731 SHA-1: 26e043b206dc0b8c4cd418ada42df150ac52a300 SHA-256: 0271f3c85bd18a159dbf36caf93b773cff58059981bedff5b399f8a96d5e3b1f
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'baarspo.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to baking or recipes, intended to trick the user into visiting the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/aws?utm_term=par+quoi+remplacer+le+beurre+dans+un+biscuit PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426423/normal_6018a825e4e74.pdfIn PDF document text
    • https://cdn.sqhk.co/tezabulaw/gx5bugd/78576294121.pdfIn PDF document text
    • https://funegalarupot.weebly.com/uploads/1/3/4/3/134316730/nurebusegube_rujozufogax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455380/normal_5fcb9e89e1913.pdfIn PDF document text
    • http://fafijitesulexiz.mygamesonline.org/suwunugek.pdfIn PDF document text
    • https://fomoxejuj.weebly.com/uploads/1/3/4/0/134000143/e7eca.pdfIn PDF document text
    • https://cdn.sqhk.co/vowogada/zFrhiX1/steelseries_neon_rider.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxaletadi/fMhahiG/word_connect_level_1280_answers.pdfIn PDF document text
    • https://jaxifojuw.weebly.com/uploads/1/3/5/3/135351184/ninejuxewitonupaj.pdfIn PDF document text
    • http://witikotuxigere.scienceontheweb.net/lefapugiz.pdfIn PDF document text
    • http://lirifajo.sportsontheweb.net/critical_race_theory_the_cutting_edge.pdfIn PDF document text
    • http://jalazekesofijot.medianewsonline.com/kedaripolupewitadewoje.pdfIn PDF document text
    • https://cdn.sqhk.co/rapovixovuti/h8Qusdh/povobopugofekiki.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/kigavanus/14737229369.pdfIn PDF document text
    • http://zimopup.myartsonline.com/1285991770.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/giruwafofenitepunuvaxi.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/53814695777.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/globalism_and_globalization.pdfIn PDF document text
    • http://wegugoleta.onlinewebshop.net/teacher_created_resources_answer_key.pdfIn PDF document text
    • http://sogoxutagejuno.atwebpages.com/a_clash_of_kings_chapter_47.pdfIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/dagosixexigerilo.pdfIn PDF document text
    • http://ludugatitabi.atwebpages.com/perfect_tense_exercises_with_answers.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_off0000eb72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB72 5488 bytes
SHA-256: 0ab70bea6af267b6753e1bb82c737d917d7aa8638794dacb11a155c9a8e193b3
font_01_sfnt_off0000fdf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF4 13248 bytes
SHA-256: 0126da5e9c8ec766718d55ce399364f7cfaf6ef8eec2179a21956ff158a0f22f

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