Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f9553cf71abede6…

MALICIOUS

PDF

66.8 KB Created: 2020-11-11 18:50:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: ebe1ada50e8207097238e15c22021c55 SHA-1: a1e7b8d40c2fd22d0c0fa03b4bfa158ad789066d SHA-256: 8f9553cf71abede6e34e1facbd1e344f14037c3b2b508133991eebc776239611
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://gettraff.ru/aws?utm_term=annual+report+certificate+nj In PDF document text
    • https://pedutiwoda.weebly.com/uploads/1/3/4/4/134481784/cf5ee.pdfIn PDF document text
    • https://toxodapakaxoza.weebly.com/uploads/1/3/4/5/134525452/xufetazuvixidiri.pdfIn PDF document text
    • https://rikisuluwujufa.weebly.com/uploads/1/3/1/4/131452938/tupigidu.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/detif.pdfIn PDF document text
    • https://jolaxedepodoz.weebly.com/uploads/1/3/4/7/134708869/3e4e12dc.pdfIn PDF document text
    • https://jadekida.weebly.com/uploads/1/3/4/3/134349878/vubokowufe-masejibidu-pezedudutike-dosafuwo.pdfIn PDF document text
    • https://jizonuwuko.weebly.com/uploads/1/3/0/8/130814311/wedit_bajojabo.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/baputedev.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/gelawiweza/11572610640.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c64d6a71-9b67-4344-b29f-1d2e8eebd978/legozilor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8871fbe7-ced2-4692-a199-208dc43e17a3/todivinanaxoti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/174f0d42-8763-48cc-9f9b-66acb0fa25ae/79636871936.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c4226b8-af60-4cba-a383-fac826dc0056/31203520697.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f77d8aa-85dc-4479-a771-0dc7d0c969e0/no_bake_s_mores_cake_recipe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1144497-aab7-47cc-995d-d8fe8db23d03/evval_sam_duydum_ki_unutmusun_indir.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/lazapitatulabevi.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_off0000cb4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB4C 4896 bytes
SHA-256: c2848143c6d03767160d29f19c5c84a2a749500e2a28af43abab0dfa09d2a2ae
font_01_sfnt_off0000dc0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0F 9944 bytes
SHA-256: bf15604ae164bb1ce64148f3abb81bc9900ff4794caef3da841d0567a2dd5331

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