Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3a87881e4ef7852…

MALICIOUS

PDF

75.0 KB Created: 2021-04-10 06:04:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: bedea01b66096371c6345c2b9e10328e SHA-1: 51a33bdd0bcbad1b12bd1735dc5e2df9b50e8cd9 SHA-256: b3a87881e4ef78528bbf156859cbb61ba68fd22e419029d28ae167ba9c87deea
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 0.9997

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://leonvi.ru/strik?utm_term=washington+dc+airport+code PDF link annotation
    • https://cdn.sqhk.co/patemugimej/boigjeM/word_wars_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovipawe/3gefcjh/lego_batman_beyond_gotham_3ds.pdfIn PDF document text
    • http://sevibifodome.getenjoyment.net/cezar_roberto_bitencourt_manual_de_direito_penal_parte_geral.pdfIn PDF document text
    • http://woxupepij.iblogger.org/blanchard_macroeconomics_6th.pdfIn PDF document text
    • https://cdn.sqhk.co/xogodapap/jfdocP0/flyff_leveling_guide_acrobat.pdfIn PDF document text
    • https://cdn.sqhk.co/kefofepobam/fjejeTk/saxexune.pdfIn PDF document text
    • http://godomun.iblogger.org/61463644404.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/bisazabe/ethnography_of_speaking.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/35439901012.pdfIn PDF document text
    • http://xenezipulugiji.atwebpages.com/difference_between_dot_product_and_cross_product.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/best_madden_20_playbook_for_2_running_backs.pdfIn PDF document text
    • http://tasefabomodewiv.epizy.com/bthusb._sys_windows_7.pdfIn PDF document text
    • http://vubimefiz.epizy.com/jevaxudonukaruzuw.pdfIn PDF document text
    • https://s3.amazonaws.com/wupuxus/68107598465.pdfIn PDF document text
    • http://folujas.epizy.com/jesowepafogubaju.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/anticoagulation_for_pulmonary_embolism_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/70162466371.pdfIn PDF document text
    • http://fataragoreb.myartsonline.com/sql_interview_questions_and_answers_for_3_years_experience.pdfIn PDF document text
    • http://pumobopebog.epizy.com/24996865463.pdfIn PDF document text
    • https://s3.amazonaws.com/zozofufulolig/international_phonetic_alphabet_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/free_meditation_music_audio.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_off0000e76f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE76F 5316 bytes
SHA-256: 1990f1a41dd9943591c6771db0956bf654972b25e7b7b207e2a30932ba9c2e65
font_01_sfnt_off0000f98c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF98C 10944 bytes
SHA-256: 147f21efc35839626867932353926b0348defc192684d41e273f21b33ef5c453

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