Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b5cdd16743bfcae…

MALICIOUS

PDF

76.6 KB Created: 2021-03-07 21:42:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c4dbf10625b6939f45c1a00b60e12a67 SHA-1: d682b6821dc63c635d7ef9c2645eba778c10a33f SHA-256: 1b5cdd16743bfcae1c5d384204f830ad5bbcf210ee1edc1dd5bbd6e1eece3ab2
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://maypoin.ru/strik?utm_term=cost+management+accounting+course+duration PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4425909/normal_5fe1582c34c6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486344/normal_601959e20cd59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392474/normal_5fdb2e92b0b2f.pdfIn PDF document text
    • http://sitebomobegux.sportsontheweb.net/how_to_set_a_westek_timer_te02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404296/normal_6043b7a300a51.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/fonibinaraj/texans_injury_report_week_16.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/phpspreadsheet_create_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/adobe_flash_player_10._1_for_ps3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/173036c6-a5ec-4cf9-be4c-24929f9a6a4d/ff7_guide_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/715305d9-f511-4bee-b48d-414f68902c7c/15848459376.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/ccleaner_professional_plus_crack_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/hurt_feelings_report_da_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50a18ea7-b71b-4bf7-9dff-8f8bde3e2b6f/repair_car_air-con_compressor.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/prime_factorization_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/fifiwalaxata.pdfIn PDF document text
    • http://tososite.onlinewebshop.net/nessun_dorma_translation_english.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/how_many_carbs_does_wendys_small_fries_have.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/iams_large_breed_puppy_feeding_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/148bf507-6a7e-43a4-b5e0-3f554f60d6db/5825890625.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/87928429845.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/android_obd2_abs_scanner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0611f0bf-e7fd-41ed-9930-f20b3a32086f/xufajaxosoxavidu.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/data_analysis_report_template_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/jifibawotefelepilapaz.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_off0000f17e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17E 5132 bytes
SHA-256: c0de758b040e4c3a6f3a79cb7fb5c95086aa8db480f45faaefdb24c7ceec07a4
font_01_sfnt_off000102d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102D2 9888 bytes
SHA-256: ac61ecbb794227c4ee2d9faa52ebaaa50b8eccb97d30b683ed64f7a120db9a96

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