Malicious PDF — malware analysis report

Static analysis result for SHA-256 23db88526a34d7e2…

MALICIOUS

PDF

76.6 KB Created: 2021-03-11 03:45:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a74d57723ec9592a238839596b496945 SHA-1: 8f06bb89e6c782627df403a5ce06fe7308174bcb SHA-256: 23db88526a34d7e2278911fccc197375d6795b5a3f728e55df44488b124e7594
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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/strik?utm_term=what+does+gnosis+mean+in+medical+terms PDF link annotation
    • https://cdn.sqhk.co/kugorazig/hhhexjh/1000_piece_photo_jigsaw_puzzle_australia.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477164/normal_6009280a7e027.pdfIn PDF document text
    • https://cdn.sqhk.co/pesuxitum/2LpqUYK/scentbird_for_men.pdfIn PDF document text
    • https://cdn.sqhk.co/lenawemijixe/fhdjdgd/nefuroxixidemoluwapom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454277/normal_5ff6916b42311.pdfIn PDF document text
    • https://cdn.sqhk.co/falunibesedo/iWdggzh/bukepedunanazu.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/fBhcfgf/buddy_toss_mod_apk_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463792/normal_5fe80276a5aa4.pdfIn PDF document text
    • https://cdn.sqhk.co/gowamojon/4chbHja/real_hispalis_football_manager_2019.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450734/normal_60065656b3d5c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480145/normal_5ff5267e89a14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416935/normal_6047dd94ab94d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500674/normal_5ff065a2de6a8.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxatotukaru/brgh03F/easy_mug_cake_recipe_healthy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483388/normal_5ff0ca6d2a867.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/pajeriramal/memojazujar.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/13537458976.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/cover_letter_template_for_marketing_manager.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/class_phpexcel_style_numberformat_not_found.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/reddit_nfl_beersheets.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_off0000ef27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF27 5364 bytes
SHA-256: a0d102ee210fcd01eb6e452f98859b39c5626133373bd14299b4a9bcf216a493
font_01_sfnt_off00010147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10147 10416 bytes
SHA-256: 38968bae5c7a7197da523fe64fb5c2d36de9208e1d4fd397d476f22152c37e48

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