Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c05c4c303e75a68…

MALICIOUS

PDF

63.0 KB Created: 2020-11-28 01:14:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 518746e0abb39bf321c8a29e55813f26 SHA-1: bb6f65300081db6d78f08e86939d3db4de66cd8d SHA-256: 9c05c4c303e75a68444d39d67335ae24cfaacaa1efd9319117a71776f4f41cb7
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://traffine.ru/123?utm_term=ww1+british+uniform+for+sale PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383445/normal_5fb4f09004b90.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/dojonuta/wadupawigonip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51dbf0dc-946d-49e6-9307-d1abafb7334d/58158679421.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/recycling_codes_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38df5a35-6296-4566-b723-87753ba1604b/new_frp_google_account_bypass_and_flashing_tool.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f74d027-e89b-4bfb-bf3a-90dba74c0591/gokunevozuroneli.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/63048718925.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/107ed4da-03da-4872-acfb-5ddd803f793d/pattern_making_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9ed8e80-17b2-4932-93fc-2d9c365b6df1/judalaxogabovajo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47a089d2-22b8-42ec-bc6b-f54cc254d4c8/free_v_bucks_no_human_verification_ps4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/026801c4-88cb-4806-a521-bbbe7d6e4313/fowotiwapuve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9003c450-eb05-4b82-877d-1dd478682925/34007314508.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/714592fe-2383-4892-acba-377937778637/kabaruje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0700542c-70f5-4243-a7a0-3c8f85db43cf/jorabuvazutanozugobiwoluk.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_off0000b8a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8A4 5304 bytes
SHA-256: 7c902ae1fe11e2abc2984baa966d603ada5a952ac929c1993dec56662ec21b46
font_01_sfnt_off0000ca9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA9B 10888 bytes
SHA-256: 2778ca7d6a677a59ef9de9c3a77bc7bc399a425eb97f8eedbdb3b5538ed1fc77

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