Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1471d74ba3dbf1f…

MALICIOUS

PDF

69.4 KB Created: 2020-11-22 03:12:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: eb9c3d9e4b4045285f4b7e516aae77a2 SHA-1: cc737f782ef10f752c7bce5ac89047a94452c3cf SHA-256: d1471d74ba3dbf1f86ecde81cabb11582fc766ac1bf639eac9cad01c542fc54b
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This indicates an attempt to direct the user to a malicious site, likely for phishing or to download further malware. The ML classifier also strongly flagged this PDF as malicious.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/123?utm_term=tech+tool+supply+company In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382189/normal_5f8ebfe821a18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474192/normal_5fabe39e0d661.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376099/normal_5f8f83793f723.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/tanapilamaxi/dragon_quest_11_costumes_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf0dc354-b12a-4f40-83ac-d21ecfef2f09/97246216108.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/tiger_anatomy_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1470e8bf-e92c-481f-80a3-f6f0dc6aacdd/selimazoferivob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4925c3e-c9bd-4106-8df0-1645168e35f5/pexurilagemililuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e6bf965-a133-40bf-bda5-2374c317a41b/54553676940.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81524519-28b6-4daa-9aa2-f4dbe7d7a9d7/21232638861.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/cinematography_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/mejores_aplicaciones_para_descargar_musica_android_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53a3786c-1550-4af3-a77b-67cb85c621a5/walt_disney_world_employment_verification.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_off0000d398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD398 5128 bytes
SHA-256: 717c6d9e1594fa81a1c76014e8091f34d53d97c2f0606bf8e04d5641299e2a95
font_01_sfnt_off0000e4ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4ED 10428 bytes
SHA-256: 77dd9ac7a9f6e2758ff290f2a13051ba20cb5ba5797ad38d48d37346d19bf154

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