Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f5aff42ed9b9d47…

MALICIOUS

PDF

69.8 KB Created: 2021-01-10 00:20:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 0089593142c6fa7244fb03cdb1f8a836 SHA-1: ec593a02152f5ee894b0b1239b463a029a006094 SHA-256: 5f5aff42ed9b9d47fde78d736ec66b31b876e29c15931f00f21516ed520ef8a2
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a trial version offer for Coreldraw. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL likely leads to a phishing or malware download site.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/aws?utm_term=coreldraw+for+mac+trial+version In PDF document text
    • https://cdn.sqhk.co/gopefovepagi/lgjkhfB/final_fantasy_viii_remastered_walkthrough_xbox_one.pdfIn PDF document text
    • https://cdn.sqhk.co/jojipimuve/fDieEhh/fofoveduzezidepir.pdfIn PDF document text
    • https://cdn.sqhk.co/fevivesuxofo/xigTEhj/mimosaluxata.pdfIn PDF document text
    • https://masudokunu.weebly.com/uploads/1/3/4/7/134731157/feniwaw-mexopobe.pdfIn PDF document text
    • https://tepupareta.weebly.com/uploads/1/3/0/8/130814680/vilobijamoxuki_mopafa_dexupa.pdfIn PDF document text
    • https://cdn.sqhk.co/migazajigum/grJifoi/english_grammar_exercises_with_answers_for_beginners.pdfIn PDF document text
    • https://sijerixo.weebly.com/uploads/1/3/4/0/134042725/df6e2ff.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/nisoxow/77793863624.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/vumazilifozor.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/38126652585.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/lulosenegamisozagolebexa.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/30842233382.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/the_world_of_lore_monstrous_creatures.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/wedding_photo_album_template_free.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_off0000d269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD269 5224 bytes
SHA-256: 8b6e9d777cf9f48fa66834bf6ee376880c150af8b31ba21864fe00d248566dc2
font_01_sfnt_off0000e42d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE42D 11264 bytes
SHA-256: b7f19af0ee2aa409284f1800023743416d4867dd049a28e1acd51cb255e4e346

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