Malicious PDF — malware analysis report

Static analysis result for SHA-256 eefa221658c6d412…

MALICIOUS

PDF

76.3 KB Created: 2021-01-01 07:07:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 4b4d896b88f71711542bfb167e81cd6f SHA-1: a1926a9686e01ec2d4db24b21d2f09dbf3362a75 SHA-256: eefa221658c6d412c9a1aa0a5448012362fecba356a37b0c38c80b0e215bfde7
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious URL, and the document body, though heavily garbled, contains text related to 'Shadow fight movie 2018' and the authoring application 'wkhtmltopdf'. ClamAV and an ML classifier flagged this PDF as malicious, indicating a phishing or malware distribution attempt. No scripts were extracted, but the presence of an external URI suggests an attempt to redirect the user to a malicious site.

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://traffnew.ru/wb?keyword=shadow%20fight%20movie%202018 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450430/normal_5fd734b19b585.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovusig/xifigiU/bubble_shooter_3_download_kostenlos.pdfIn PDF document text
    • https://cdn.sqhk.co/peferitukofa/gjhhhij/whole_hog_cafe_fayetteville_ar_catering.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390097/normal_5fb5f98858009.pdfIn PDF document text
    • https://cdn.sqhk.co/zikegasenar/iQyoZgj/40405251609.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/1c2eeab0-7340-4c34-becb-d481d589ec0e/30015462170.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e259e04e-799c-4b95-8d51-22ec25f2226a/tazonujaduwejaxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9112c3b-4850-434c-bce4-5a1b33c1bfea/downloadable_jeopardy_powerpoint_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/348db142-2507-45f1-ada9-d34bdc9b43ab/24256326172.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/640d1cca-1a33-40cd-8778-edcf52547760/68594457855.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f4819da-67fe-4a76-aefc-96a81ce4f25f/lynbrook_bell_schedule.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_off0000edc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC6 5792 bytes
SHA-256: 30d46f37377f24227a14ba8d305f0c2ee8ca385ebc961da4049a5c29eaa49084
font_01_sfnt_off0001017d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1017D 10400 bytes
SHA-256: c4bfc36eec8b37959071448e3688947884d0cffb9db713fdcddf94dd19708dcc