Malicious PDF — malware analysis report

Static analysis result for SHA-256 5db5a76c6bfdb4a8…

MALICIOUS

PDF

79.8 KB Created: 2021-03-04 12:04:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: ce44770cc94f92ff3a9c45b1b59b8410 SHA-1: e5cce7b22f799cf46861e67cd035b84ce29b010b SHA-256: 5db5a76c6bfdb4a84265b5634d5745b321ad40c9219df569d066ce2ac065a538
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to be a lure related to business report examples.

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://midufefew.ru/strik?utm_term=how+to+write+a+business+report+example PDF link annotation
    • https://cdn.sqhk.co/xiroxozalal/iKlhdHN/1st_birthday_cake_images_for_baby_boy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493905/normal_5fc6c896ab328.pdfIn PDF document text
    • https://cdn.sqhk.co/simixejazir/ihrbSbk/wordpress_admin_login_loop_redirect_problem.pdfIn PDF document text
    • https://cdn.sqhk.co/kekumumaxow/bjijegd/age_of_war_4_armor_games.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420934/normal_601fc3e5f0dd1.pdfIn PDF document text
    • https://cdn.sqhk.co/xataruzepape/2gfYjfT/communism_vs_socialism_definition.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/faxaxos/minute_book_template_canada.pdfIn PDF document text
    • http://dufedowukej.rf.gd/60132228325.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/insect_glaive_beginner_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/60728136203.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/barsaat_film_song_1995.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/84675252955.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/platform_pumps_peep_toe.pdfIn PDF document text
    • https://s3.amazonaws.com/dexodekelaseki/rigida.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/kabad.pdfIn PDF document text
    • http://pizoxuwa.epizy.com/real_analysis.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_off0000fb6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6A 5224 bytes
SHA-256: 0ed7daf6b72c27de5b144c65adc87004929d1ed1bef26cb86e4ca735ff8b9ceb
font_01_sfnt_off00010d22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D22 10780 bytes
SHA-256: 7bd7b5398d0e46266bf0b2582ccb786be866e5faba86aa06c8dbe3081f4f3203

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