Malicious PDF — malware analysis report

Static analysis result for SHA-256 9379667632f45755…

MALICIOUS

PDF

123.2 KB Created: 2021-03-10 00:56:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: bb372669db12d636b4017ef27c3118a1 SHA-1: 17a57b5801356d7846af39d112c8f4f0560a4e0d SHA-256: 9379667632f4575513c1ee3898064fe7900976f33a7299641bca2904bb2ac940
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 suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF as malicious. The document body, though heavily obfuscated, appears to be a lure related to a search query, suggesting a phishing or social engineering attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://jumiwimov.ru/aws?utm_term=la+celestina+resumen+por+actos+pdf PDF link annotation
    • http://dufifudusimube.mygamesonline.org/92138234101.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387810/normal_5fdd5aef2a41b.pdfIn PDF document text
    • http://gukiduwonaxinef.getenjoyment.net/sharepoint_2013_workflow_not_starting_when_item_is_created.pdfIn PDF document text
    • http://nopotaz.medianewsonline.com/41739730995.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421637/normal_6014569d1ed4a.pdfIn PDF document text
    • https://cdn.sqhk.co/xubuzivo/aRghihb/wulegoze.pdfIn PDF document text
    • https://cdn.sqhk.co/kitolitik/cVjgBid/gudexotoxinasigilibin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fepetixapokurob.myartsonline.com/the_stranger_albert_camus_audiobook_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/delete_duplicate_values_in_google_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/how_to_connect_to_uconnect_ram.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/why_wont_my_keurig_2.0_work.pdfIn PDF document text
    • http://fogokenum.onlinewebshop.net/0-12_months_baby_development_milestones.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/2082453918.pdfIn PDF document text
    • http://zizenatoxu.myartsonline.com/the_wu_tang_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/joomla_templates_page_builder.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/flower_of_life_jewelry_sterling_silver.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/zababesek.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/small_engine_repair_movie_2019.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_off0001a174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A174 5240 bytes
SHA-256: 3ae892f6f019431837ea6acb8518dd242b550d10cbcb900e2ce1fb1f2ce6b163
font_01_sfnt_off0001b332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B332 13212 bytes
SHA-256: b38d7c8a8c14269ce470bd76de60671f1a930b16e1e83b6096aaac9f99c7d7db

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