Malicious PDF — malware analysis report

Static analysis result for SHA-256 b274c74f5fd7dc4b…

MALICIOUS

PDF

65.3 KB Created: 2021-02-19 00:01:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 973900eb56ece58a1283d506b31da792 SHA-1: 749d679a2a39b2d662fc1a5267e396005b416f35 SHA-256: b274c74f5fd7dc4be36ab18bc091cd10dd896d9620ce9609db7212a1c1c4f528
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware download page. The document body, though heavily obfuscated, appears to contain product-related text, suggesting a lure to entice clicks on the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=trio+axs+4g+tablet+price PDF link annotation
    • https://cdn.sqhk.co/nedabuke/X8kggdx/best_free_dating_site_in_usa_and_canada.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/jjhFogi/bevuxarijagezuporukezifis.pdfIn PDF document text
    • https://cdn.sqhk.co/toviranevu/paJs1ii/pentimento_productions_inc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417414/normal_5ff7d4411b609.pdfIn PDF document text
    • https://cdn.sqhk.co/ratosakip/Qig2mjb/western_music_hd_wallpaper_download_for_mobile.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403262/normal_5feb193d60187.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403819/normal_6016fe8b10e56.pdfIn PDF document text
    • https://cdn.sqhk.co/sulezudipozi/ojhjhUy/virtual_classroom_background.pdfIn PDF document text
    • http://xowefew.22web.org/siratesuligoze.pdfIn PDF document text
    • https://cdn.sqhk.co/vafodagusun/chggehR/sejunukokizudimu.pdfIn PDF document text
    • http://disetikala.22web.org/masezanijunetubumon.pdfIn PDF document text
    • https://cdn.sqhk.co/rotexopapi/hh3VBgf/slime_ninja_run_2d_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470405/normal_5fd054f544296.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/divikufifir/zuforabepuj.pdfIn PDF document text
    • http://daxevetefixidaj.epizy.com/51434035148.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/reporter_meaning_in_bengali.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/rugogalavifes.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/checkers_hyper_specials.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_off0000c19c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC19C 5348 bytes
SHA-256: e573452b1989e1c2c8c69715cd9426c94d4e174ce997f8c23c0837dce7ba82b1
font_01_sfnt_off0000d3e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E1 10736 bytes
SHA-256: 6eb4b94861fab2e9b91158ef99a300bf4cb54cfbd563dbdf7707ff415a11f2fe

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