Malicious PDF — malware analysis report

Static analysis result for SHA-256 de19e867bf3ec32f…

MALICIOUS

PDF

76.2 KB Created: 2021-03-08 08:42:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: f9606081efec15c3042b87d9a5f0919b SHA-1: 75720e71b35b88fc06cce97dee845b5c300964d9 SHA-256: de19e867bf3ec32f54f07f681963be3925557e8353e80f17c12fdba0cf6fad40
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI pointing to 'baarspo.ru', which is suspicious. The ML classifier and ClamAV also flagged this file as malicious, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains keywords related to 'Chick fil a menu nutrition info', suggesting a phishing or scam lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://baarspo.ru/award?keyword=chick+fil+a+menu+nutrition+info PDF link annotation
    • https://cdn.sqhk.co/dodirorip/fggKVuP/snapple_facts_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/doparibi/xwlijtw/lease_vs_buy_car_calculator_south_africa.pdfIn PDF document text
    • https://cdn.sqhk.co/rijomawonuj/j94vqZR/video_language_translator_free_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/bikugipozamu/Gjgjiib/51336312138.pdfIn PDF document text
    • http://lnstagramcentre.net/36433507879cklc1.pdfIn PDF document text
    • http://lnstagramverifiedsbadgeform.com/film_for_polaroid_sx-70_land_camera_alpha_1xl043.pdfIn PDF document text
    • http://finansi-7.online/87837876249170jp.pdfIn PDF document text
    • http://coolmag.biz/fighting_the_great_war_western_frontt4jdk.pdfIn PDF document text
    • http://dasonudulikuvon.22web.org/self_healing_concrete_report.pdfIn PDF document text
    • https://cdn.sqhk.co/dokukavifig/I7ihjdr/bet9ja_old_mobile_coupon_check_ristechy.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/jenagubadopi/similarities_and_differences_between_the_hobbit_book_and_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/94099380376.pdfIn PDF document text
    • http://sevetise.rf.gd/online_masters_in_health_economics_and_pharmacoeconomics.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/94343815684.pdfIn PDF document text
    • https://s3.amazonaws.com/povelenavuviw/93728742122.pdfIn PDF document text
    • http://gijawiravutul.epizy.com/curriculum_vitae_vs_resume_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/jalofinilov.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/pulmonary_atresia.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/fractions_worksheets_3rd_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/nedog.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/was_call_me_by_your_name_taken_off_netflix_uk.pdfIn PDF document text
    • http://lubozudaxik.epizy.com/76667070221.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/mesa_boogie_mark_iv_settings.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_off0000ef1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF1D 4912 bytes
SHA-256: 7df416cfa763099fef133dc0411e3655e3654cee0adf596570cb05de37ea6505
font_01_sfnt_off0000ffa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA6 10592 bytes
SHA-256: ca096022f710d9edf2db2359ad1c30193c4875ae2f718cfce149824ff9cee075

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