Malicious PDF — malware analysis report

Static analysis result for SHA-256 24a9bc5ea0f24df4…

MALICIOUS

PDF

71.1 KB Created: 2021-03-02 19:56:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 00e557a4540774183d13ce6f110af1fc SHA-1: 314d47ab98783825afdbbab6a111ad4d7775a9af SHA-256: 24a9bc5ea0f24df4698a24a537840bda169f4670f1e7b4b1d722a6969b899850
96 Risk Score

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 0.9998

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://gimoguvi.ru/wix?keyword=cell+organelles+and+their+functions+matching+worksheet PDF link annotation
    • http://kumorepo.22web.org/93153287080.pdfIn 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/mosezavor/dosipa.pdfIn PDF document text
    • http://popirarubinuluk.rf.gd/chassis_brakes_international_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/nsw_public_sector_capability_framework.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/ios_app_icon_template_2019.pdfIn PDF document text
    • http://muzafevabuma.rf.gd/home_alone_imdb_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/11251357208.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/molusakop.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/all_songs_of_twilight_series.pdfIn PDF document text
    • http://keximidurowu.rf.gd/the_battle_of_algiers_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/27956051001.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/pamir.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/florida_fe_exam_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/fefusejir.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/lanthanides_and_actinides.pdfIn PDF document text
    • https://s3.amazonaws.com/kalanejaxutilif/speed_test_ptcl_dsl_free.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/54834307928.pdfIn PDF document text
    • https://s3.amazonaws.com/fisulefajow/talewulunokar.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD49 5496 bytes
SHA-256: aaea5ef24236fd11b05d089efbd75b5fbb80e86249f9b00cf97e41f58432091d
font_01_sfnt_off0000dfd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD7 9672 bytes
SHA-256: 77638c10b283b28bcdca1f22aecb60acd2615845f44612cdca4f6badef650c06
font_02_sfnt_off000100a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A7 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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