Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed77f07a75ac730d…

MALICIOUS

PDF

58.3 KB Created: 2020-11-23 00:41:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1fd96e0ad3d29a634411bcb9790c5207 SHA-1: bdfe34e0417bba5141f55c1fead4d89d5aeb7aba SHA-256: ed77f07a75ac730d7af972644ddc5d724dcde5e38281c956675a4337bd87c951
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a URL that is presented as a firmware update. This URL is likely intended to lead the user to a malicious site. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://trafftec.ru/123?utm_term=sony+xav-ax200+firmware+update PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405929/normal_5f9277d3f3361.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369501/normal_5f90e9447c28e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380080/normal_5fa0057e0c0a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481282/normal_5faef28870853.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372080/normal_5f977f2ed189f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376357/normal_5fa43be2dff2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474457/normal_5fb278585c887.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/861225bc-279d-4600-920f-0d516ad9ba7d/whatsapp_plus_mod_apk_v6.30.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/medea_study_guide_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/halloween_sheet_cake_images.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_off0000a751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA751 5708 bytes
SHA-256: ca77e32f909899a60acf678655eb3bc55a76d3eabaf39959ee2db4d73215aa68
font_01_sfnt_off0000badd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBADD 10000 bytes
SHA-256: bb43256430d43585261160be0a568f74e45c96146b4523c2f893d11ee88e2ed4

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