Malicious PDF — malware analysis report

Static analysis result for SHA-256 54ae3b6241c0fa78…

MALICIOUS

PDF

76.3 KB Created: 2021-02-28 15:17:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 085427668ee59a283160bb31f00e5663 SHA-1: 53f37a2fbe016c9f2ee4e221bc55652483e316ac SHA-256: 54ae3b6241c0fa78cdadd5fbd714686d910978664ef270f182ceb6abab2e869a
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 0.9996

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://xajibur.ru/wix?keyword=1984+ap+physics+b+free+response+answers PDF link annotation
    • http://kusafomidufe.mywebcommunity.org/alpha_zeichen_word_mac.pdfIn PDF document text
    • http://puveputado.sportsontheweb.net/dungeons_and_dragons_5e_zombie.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490365/normal_5ffeaa16e9540.pdfIn PDF document text
    • http://didazema.mypressonline.com/what_is_a_good_exercise_program_for_seniors.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383688/normal_601529cce01d3.pdfIn PDF document text
    • http://digogipexoluku.iblogger.org/80935651179.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387704/normal_601a5960bce52.pdfIn PDF document text
    • http://betizekaxu.getenjoyment.net/5807847619.pdfIn PDF document text
    • http://vowufijetapiko.sportsontheweb.net/how_to_evaluate_data_analysis.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/dujepav/shakespeare_beaucoup_de_bruit_pour_rien.pdfIn PDF document text
    • http://sikejilewiz.epizy.com/speed_of_light_equation_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/causes_of_poverty_in_nigeria.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/android_studio_proxy_check_connection.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/design_and_control_of_concrete_mixtures_16th_edition_free.pdfIn PDF document text
    • http://fojosotum.myartsonline.com/wuwisad.pdfIn PDF document text
    • http://vifikuvikepavad.rf.gd/golew.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5EF 1644 bytes
SHA-256: c4d1a53d937dc80cc27e4df479f32ca6cbda414fa749da358494056b5d309486
font_01_sfnt_off0000de1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE1E 5508 bytes
SHA-256: d1764b4d047e4e31cb286b91e440116b68b38949c69c5f490c103de02ff9a2c1
font_02_sfnt_off0000f0d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D0 10784 bytes
SHA-256: 23c7d64bab24a5e2fd11a3887b5f71d3c2c5b5bfb160bb7f77742ca4aade6437
font_03_sfnt_off0001157b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1157B 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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