Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3285bda77ec4c7b…

MALICIOUS

PDF

89.8 KB Created: 2021-02-12 04:57:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3b34d82816ce46609eea1b6b050d7a82 SHA-1: 21e218df66daa0e4a5b486283ad46adf496d51b5 SHA-256: d3285bda77ec4c7b48cb427a3d1d9fc52423703582850f0bc9446e2244fb3225
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URL pointing to a suspicious domain, likely intended for phishing or credential harvesting. The PDF structure also shows signs of manipulation with duplicate object bodies, suggesting an attempt to evade detection.

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://jacksth.ru/wix?keyword=experimental+uncertainty+%2528error%2529+and+data+analysis+solutions PDF link annotation
    • http://mmmuuuue.space/mueller_report_summary_barruogip.pdfIn PDF document text
    • http://wiinorama.space/272407529716mv8g.pdfIn PDF document text
    • http://blog-millionaire.buzz/color_to_do_simple_list_widgetiy4bn.pdfIn PDF document text
    • https://cdn.sqhk.co/gajeneset/gjeqhfh/kiss_of_war_facebook_ad.pdfIn PDF document text
    • http://leftoutclub.com/joomla_3_templates_virtuemart_freepm5ys.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/bufexa/17947013153.pdfIn PDF document text
    • http://ravojetejevigim.epizy.com/famunurefasubapapalivazib.pdfIn PDF document text
    • http://pawuvunof.epizy.com/beautiful_english_words.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/zufetaxiwoterejowufon.pdfIn PDF document text
    • http://sunuwib.epizy.com/environmental_engineering_project_reports.pdfIn PDF document text
    • http://karatufi.epizy.com/ragudasupunanotu.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/school_uniforms_should_be_banned_introduction.pdfIn PDF document text
    • http://kagiwabiluwotel.epizy.com/bahubali_2_movie_video_songs_hd.pdfIn PDF document text
    • http://nupowabel.rf.gd/rockstar_movie_mkv.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/fiverr_basic_english_test_answers_2019.pdfIn PDF document text
    • http://zubeleboju.epizy.com/wow_tbc_herbalism_guide_1-_375.pdfIn PDF document text
    • https://s3.amazonaws.com/sojenozap/19951267630.pdfIn PDF document text
    • http://bukaduxanob.epizy.com/the_big_five_personality_traits.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/claudinho_e_buchecha_nosso_sonho.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/bunepiworirupumavo.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_off0001216e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1216E 5500 bytes
SHA-256: ae52b6ac2456264a7037487a8895438db779856d0814d79dcf482d77ae92643a
font_01_sfnt_off00013421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13421 11084 bytes
SHA-256: 90efda413184a99f2c4bda6edf83cfd176528890d026c73359f7f469c5c970b8

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