Malicious PDF — malware analysis report

Static analysis result for SHA-256 485d1c305e1bd78c…

MALICIOUS

PDF

71.2 KB Created: 2021-02-25 23:45:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 353266b857aa6302db4ce7578305b30c SHA-1: 768e078d090ff123c2ae08cefc5bf14b18f4db8b SHA-256: 485d1c305e1bd78ca6b9ad298b8ade9490720632da37f792ca2644d31591feaf
186 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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://leonvi.ru/wix?keyword=hotel+montana+haiti+adresse PDF link annotation
    • https://cdn.sqhk.co/moranunemuk/5hbgjmV/screen_recorder_software_free_download_for_windows_10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448330/normal_5fd62b3aa1f4d.pdfIn PDF document text
    • https://cdn.sqhk.co/sixajuzap/iHCgcMN/business_process_management_handbook.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383687/normal_5fdbafb9a7181.pdfIn PDF document text
    • https://cdn.sqhk.co/dowusutitozi/AnjahiF/btools_business_model_canvas_apple_music.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/Mnxifhd/ppsspp_psp_emulator.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/zozovofirema.pdfIn PDF document text
    • https://cdn.sqhk.co/lekusovu/bDkcLAj/adderall_vs_ritalin_for_adults.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380219/normal_601d8429156bc.pdfIn PDF document text
    • https://pamaxorakumi.weebly.com/uploads/1/3/4/0/134019068/4550169.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4528876/normal_5fd091b9ce6bf.pdfIn PDF document text
    • https://nitikado.weebly.com/uploads/1/3/4/6/134660078/5124055.pdfIn PDF document text
    • https://kesakoti.weebly.com/uploads/1/3/1/0/131070149/bipibo-gorifupasov-torejekaf-buxubugogago.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499319/normal_5fc9eb19819b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414488/normal_5fee7fd81d9b8.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/rodiligarexo/catfish_noodling_guide_service.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/google_maps_in_english_only_android.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/11_22_63_stephen_king_review.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_off0000d8c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C0 5024 bytes
SHA-256: 8207427504e5810ed2cdb86c59a80c11d49acebcc9ef2e560dfa3331fe898c12
font_01_sfnt_off0000e99c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE99C 10748 bytes
SHA-256: 96407c0286a6fd0a54ebd58af72915bd9adcd254aed57c5a132d155be5e8425d

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