Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb455eb46cadf495…

MALICIOUS

PDF

67.3 KB Created: 2020-11-22 09:42:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 32e8bb526c22a358267d8792effd8f6a SHA-1: 9117eb0e8a1052f13d306a970a3640917a656742 SHA-256: eb455eb46cadf495324941d883846e050fda56be84a84c19a7497b580c3a487e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document that contains a URL leading to a phishing site. The document body, though heavily obfuscated, appears to reference a Samsung phone price, suggesting a lure for a phishing campaign. The presence of an embedded URL and the ML classifier's high confidence score indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://traffking.ru/123?utm_term=samsung+sgh-t399+price PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495393/normal_5fb520b1077a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372719/normal_5f8a3e0236ac8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370989/normal_5f8c75d43b25c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f572b1cf-9212-445c-9c7f-8f6fa7e9ade8/rogowubanelimutu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a9dce89-9b0b-4dfc-bc9c-0f998ac39613/star_wars_jungle_planet_name.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69b5e759-9baf-42f9-8459-78b6bad172b2/rimworld_best_guns.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/google_yahoo_mail_sign_into_mail.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40084bf4-2fd3-4444-9a5c-4f60aea8708d/bukinogibexalizomodot.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/72773041290.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_off0000c76e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC76E 5768 bytes
SHA-256: 270cf3bf38a073dabf8451e234056eea3662970bc1dd04825c3ca8801c9fcbc5
font_01_sfnt_off0000daea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAEA 11616 bytes
SHA-256: 783e44df671e30e714ac760a014a3a3c05de0599d1b6f7a46fbcaf4e2d08e07d

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