Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0ba3d42f3d52d18…

MALICIOUS

PDF

90.7 KB Created: 2021-03-23 15:08:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 47f1a3ed606b8954b812dc864260c606 SHA-1: 594d05f7cd9d6c186c621fa68cbc1f8c6e9b4396 SHA-256: c0ba3d42f3d52d189698da8ccaa20c990334646c6c99a006ab114344274f856e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to 'symbolic logic examples pdf' and 'wkhtmltopdf', suggesting a lure to disguise malicious content as an academic or informational document.

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://baarspo.ru/award?keyword=symbolic+logic+examples+pdf PDF link annotation
    • https://cdn.sqhk.co/xugiwatokax/NFjcooX/android_7_auto_rotate_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/bisulalu/uhcyBec/dazegofibu.pdfIn PDF document text
    • https://cdn.sqhk.co/gugapedulob/dFjjie0/vomatesowewigerotisiv.pdfIn PDF document text
    • https://cdn.sqhk.co/loziromegon/giQlhfX/legend_of_ace_chinese_drama.pdfIn PDF document text
    • http://talinab.iblogger.org/tekujaganigojakojasomakap.pdfIn PDF document text
    • http://solavopuna.22web.org/42804740587.pdfIn PDF document text
    • http://jixoxegige.iblogger.org/6071764817.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/zarusegibitumet/28414714507.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/articad_14_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/c_programming_examples_with_output_free_download.pdfIn PDF document text
    • http://kepatoxa.epizy.com/craftsman_garage_door_pairing.pdfIn PDF document text
    • http://fegarezitima.rf.gd/xisaze.pdfIn PDF document text
    • http://tomijejimener.epizy.com/free_will_template_northern_ireland.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/multilayer_co-_extrusion_plastic_sheet_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/netflix_app_won_t_movies.pdfIn PDF document text
    • http://vaxinot.epizy.com/que_titulo_necesito_para_abrir_un_taller_mecanico.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/1815289094.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/ar_15_parts_diagram.pdfIn PDF document text
    • http://kuronodufanox.epizy.com/grammarly_for_microsoft_word_free_mac.pdfIn PDF document text
    • http://dedetepejoxele.epizy.com/dangling_modifiers_exercises_with_answers.pdfIn PDF document text
    • http://piwuzodoxomox.epizy.com/agyo_privacy.pdfIn PDF document text
    • http://tovegini.epizy.com/93057450517.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/24540953418.pdfIn PDF document text
    • http://moxowofabijis.epizy.com/6373488500.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/21_pilots_trees_piano_sheet_music.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_off00010cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB5 5792 bytes
SHA-256: 14bae2282b4f051d5711f134195c8937be2f11ac64f04488bd7c91b274e24c30
font_01_sfnt_off00012067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12067 11252 bytes
SHA-256: 4632e940dacc95c45c92ec2578214a6aa30f36cb929224d5d43ababf44a598bd
font_02_sfnt_off000146f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146F6 16328 bytes
SHA-256: b33542966eb2def4fad944de4b7e853f90c98ff8398d87209fa0e7f0b50dc667

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