Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dd90bdd4f0f15f6…

MALICIOUS

PDF

73.9 KB Created: 2020-12-04 03:42:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: bade31705a482cf5ab414f0cf6d309b2 SHA-1: 8b6b0fae9e722370063f9172c43e55068fe48e2e SHA-256: 9dd90bdd4f0f15f68ee24ae185e9f80b946f09915eda190eb05a2ef15845c215
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 'https://traffking.ru/aws?utm_term=2010+cadillac+cts+4+performance'. This URL is likely used to lure victims to a phishing site or download further malicious content. The ML classifier also strongly indicated maliciousness.

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://traffking.ru/aws?utm_term=2010+cadillac+cts+4+performance In PDF document text
    • https://cdn-cms.f-static.net/uploads/4472764/normal_5fb5371be9481.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474478/normal_5fb419015f7df.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/ea372ee4-69f6-44f9-891a-55646af595e8/zuxufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f39daf1e-a0fc-4c2c-b0c3-60e62da3b48d/kixuborobovubezu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9b87f6e-685f-4e13-8708-07cd2090e050/64681424035.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5be8eb8f-7478-44d6-9976-a9bb9a7acdf5/nakuzimuzeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bea493a2-78f0-4bb9-aaaa-68b559fea516/linux_basic_books.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b0708651a04751998254/t/5fc7e358a66cae07662cc2fc/1606935385306/rokokagixo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42485d2d-d3d5-4050-a906-00e4a7cb63a7/power_pressure_cooker_xl_manual_en_e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f8f6775-bd79-446c-9cc4-35fab2c435ab/neveji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a789f6df-8f0f-4466-93bb-90db58249235/69883676471.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27955e99-f6bc-420e-9028-b3469882b605/loniwasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b719f326-fcfa-47a6-a0f3-3f7a62d6c165/paw_patrol_mighty_pups_torrent.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/699fee23-e2b2-4878-acca-ccfe6edb09b3/26245052754.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d650403f5353fd956949/t/5fc211fd645712565483db13/1606554110107/death_by_misadventure.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_off0000d3f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F8 5620 bytes
SHA-256: 0c7e6a7b1e28745e2139ed830d458134fd5891898a2e3bbdf66a83f221584c94
font_01_sfnt_off0000e709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE709 15816 bytes
SHA-256: 7652395b7959d0e35070b2e0dbdc287867f23492b8bd94267154bfe85e7ac461

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