Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a15eebcbf12c30b…

MALICIOUS

PDF

67.0 KB Created: 2020-11-20 09:10:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 30b4da827a122a107de83e3096ddff9a SHA-1: 9d69e096d6bd2956134ece3e1587d9ec7412f13f SHA-256: 8a15eebcbf12c30b4c391a67f8110486429e2c3c1d85fd2262bce48818c026c1
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://ggtraff.ru/123?utm_term=plus+size+tutu' is identified as a malicious redirector. While no scripts were explicitly extracted, the nature of the PDF and the malicious link suggest an attempt to lure the user to a harmful site, consistent with phishing or malware delivery.

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=plus+size+tutu In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373983/normal_5f88f2a3cd3e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411218/normal_5fa911516737e.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/1d40f0ef-7b4b-470e-87ca-c91daff0fab1/worship_song_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dea0bfac-7c8c-441f-a1b8-9fe1402823eb/metoprolol_to_labetalol_conversion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1efef262-103f-46dc-ab45-06a8fd1924b5/59894806491.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f58235d6-229b-46ef-ac62-c6442b1a591d/al_anon_bookstore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b038939c-e39e-471a-97c9-1ed9cc419a3c/79900495309.pdfIn PDF document text
    • https://s3.amazonaws.com/newopetusam/40932926875.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d35cb63-f65f-45cf-8432-8b87c93dfcc4/aprendiz_de_sabio_opiniones.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7795840e-9eb1-47c8-8351-e9f3240e2413/creswell_6_steps_qualitative_data_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/738a2c8a-053e-4926-bce3-9c478011a69a/48349729327.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0b54b8f-ba8b-4681-a6ae-cc61c80a067d/pemibumidelurarufule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c548c4f-0f71-490f-9777-09d7b70da0a6/soxuxamunisoko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9271eb05-d0b6-4a74-b9c0-d0f638e8c666/acs_general_chemistry_study_guide_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b221752-1aea-4405-a62a-7025636e6789/stardew_valley_secret_forest.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_off0000cae6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE6 4424 bytes
SHA-256: fff755e56e55fa5445969b1ae2bb81d7920b644b24b45f483dd8f6d635f270fa
font_01_sfnt_off0000da0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA0F 11324 bytes
SHA-256: 81b65dbb24fe3cf63ce0ed96b7f420d4f7e12f9cf7c4b91727b67e5762f2f7df

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