Malicious PDF — malware analysis report

Static analysis result for SHA-256 c32a7ee43c7fe5bb…

MALICIOUS

PDF

65.3 KB Created: 2020-11-18 21:23:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: b7feda215cfccbd1c711ecdbb560a051 SHA-1: b736d8cdc2383761beeedce13e62379242e9ded6 SHA-256: c32a7ee43c7fe5bba66aee425bd16c94377bd3199037e80a3e0b0be3d196cb25
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is a common tactic for phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of a malicious URL suggests the document is designed to lead the user to a harmful site, likely for credential harvesting or further 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://cctraff.ru/123?utm_term=clifton+board+of+education+clifton+nj In PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/nufupu-waler.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393208/normal_5fab52b468f6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387815/normal_5f9e593b6b53f.pdfIn PDF document text
    • https://pitimonajavigo.weebly.com/uploads/1/3/1/3/131383860/junokabujo_nefafosovuxi_fiwiremevanid.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/506faa11-f333-4026-8dac-ad158c5c0e3f/need_for_speed_exe_download_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f31c0b53-6cd1-45ba-b6e6-d1c5cbe0e35a/rodukufefofurerajoviwuloj.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/memabuwaxozibaxejenokab.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/microbiology_laboratory_apparatus_and_their_uses_with_pictures.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d347fb44-812d-4504-b906-db2622112b6c/zunok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/161b0585-315b-44cf-b072-63e4dac338f2/af_sosyoloji_sosyal_politika_ders_notlar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a5b197e-bd63-45f8-aa85-49d4d61286f3/vugotuvidixalipuvizopofok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ae777ae-7b26-4ac5-8bac-f8e28ec266a2/76419003276.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eab49259-7f31-401d-b404-8d3b187fb170/google_chrome_apk_kindle_fire_hd.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_off0000c1d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1D9 4956 bytes
SHA-256: ac6889b991c189f65730b73b16efb90a5f8184a0c5882483375952ccbe19e7fc
font_01_sfnt_off0000d2c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C5 10960 bytes
SHA-256: 5642fb85f5933442fbad206ecdf07b098a8bbdaf10e9ad42b66fd8e62748b190

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