Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2b18d4551a136b1…

MALICIOUS

PDF

91.5 KB Created: 2021-04-02 08:25:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 64dee310c6a4927c2747e51d1f970c10 SHA-1: 51591fb0a1744adfc22e02b1f413f96fe6bff0f1 SHA-256: f2b18d4551a136b12e63c6cb6820e8424f435bf25c36cde812861909656c8d0a
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI pointing to a suspicious domain, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of a spearphishing attachment designed to redirect users to malicious content.

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://fokemale.ru/award?keyword=fluvial+landforms+pdf PDF link annotation
    • http://xamakaroz.iblogger.org/arracacha_beneficios.pdfIn PDF document text
    • http://lalashoppen.online/libro_capacitacion_y_desarrollo_de_personal_alfonso_siliceo_gratislgme3.pdfIn PDF document text
    • http://voirly.xyz/mesiselogivune5iq2y.pdfIn PDF document text
    • http://faxobasom.22web.org/6.0_powerstroke_manual_transmission_options.pdfIn PDF document text
    • http://golosa-spasibo.ru/hive_llap_performance_tuning37gvs.pdfIn PDF document text
    • http://povar2020.site/gikoloxufexam9zlms.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e72e019b-a883-40b6-b97f-fd1e72e5259f/38869613334.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/blackberry_bold_9700_user_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecc8237e-83e7-4f7f-896f-bc7d5a244a32/norton_anthology_of_world_literature_vol_d_e__f.pdfIn PDF document text
    • https://65f7c47b-6fa2-4aed-9649-637438a88329.filesusr.com/ugd/8fb471_73c6f1cac5b846e889596be43fd76d8f.pdf?index=trueIn PDF document text
    • https://976edc35-935c-46de-9e6e-e225dbc25668.filesusr.com/ugd/0829d8_dc185b1935ec4f8ca40df0005a2b398a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/nutrition_dunkin_donuts_glazed_donut.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/shawshank_redemption_parents_guide_imdb.pdfIn PDF document text
    • https://2c0370cf-43ec-4dc9-8589-ec1e7793a70d.filesusr.com/ugd/404058_c36047fe96b441c180e1e5b4a1be8cb4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8eec01d-65e5-4ca5-9efc-d44e4bd63c11/small_engine_repair_training_michigan.pdfIn PDF document text
    • https://6cbe2f5c-748b-4bc6-b691-25a968a47885.filesusr.com/ugd/d6b5da_b71598b8a3694541962bd69f7067fd9a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5950c293-e718-4a96-9f09-a392756ea274/lesson_plan_ka_matlab_kya_hota_hai.pdfIn PDF document text
    • https://d17f4099-ecc1-42b1-9c73-51521793457c.filesusr.com/ugd/4a2613_97bb169b172c48acadbaf078b08d88eb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/44975677754.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/connexions_methode_de_francais_niveau_2_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/lubekumojof.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_off000114b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114B1 5200 bytes
SHA-256: d7394965f3bd451230a2a212ca05499e8f0ef98777b5c809f754efa3e9a9984a
font_01_sfnt_off0001265c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1265C 10748 bytes
SHA-256: 4091eee9444ec2c8c11efce53fdc7b86651c5c0f00257b40fefa837d597e8901
font_02_sfnt_off00014b61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B61 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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