Malicious PDF — malware analysis report

Static analysis result for SHA-256 58f71694ce6fb2d6…

MALICIOUS

PDF

81.1 KB Created: 2020-11-17 19:13:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 4d57145283686d546478ffb9119a76b8 SHA-1: d945dc42b46ef0d362737f4d7b8af064d87b0cd8 SHA-256: 58f71694ce6fb2d64c0fc68f174d5b54e31ca9cd9e61f3a3ccad2455a69fbe90
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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/aws?utm_term=responsive+bootstrap+4+template+free In PDF document text
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/jarakaledo.pdfIn PDF document text
    • https://dojudiwoju.weebly.com/uploads/1/3/1/4/131406456/2654455.pdfIn PDF document text
    • https://nenuxigibasus.weebly.com/uploads/1/3/4/6/134694542/ziwosavoxaso.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/jiwevuterijafus-mekuvezagezoj-dalefener.pdfIn PDF document text
    • https://guwewekotijiz.weebly.com/uploads/1/3/4/7/134714515/2467941.pdfIn PDF document text
    • https://sajenaviwabawi.weebly.com/uploads/1/3/4/2/134266368/loveg-tiviperikutekuz-sozojater.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/e0e2186b-d3db-4213-8086-a63fe4c397a6/ripoxoxosanetagit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc3934b5-fdb4-451f-a54e-04bdf0eb2efa/koxuxabisinijokowi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/284a54a3-26fc-42b0-9580-f3b69e42defc/50471518851.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90dcbf5a-a959-432b-a69d-d44387ab39e0/98374054154.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78762c76-f025-411c-b47f-5472ba975f59/balipupogizenevaz.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/37428529444.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/ripejofaxiki.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/bowling_green_mo_high_school_reunion.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/hermann_van_pels_quotes.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA38 5132 bytes
SHA-256: be9034a77d22df6ba4bb62798601068ee9d5fde1ed6b69d2586e751da859bcd1
font_01_sfnt_off0000fb8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB8A 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off00010418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10418 10828 bytes
SHA-256: ed798d3a4797da3540921c82f3bc8063845c62bd3db2675b7a18cf07cb9f4e24
font_03_sfnt_off000128b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128B2 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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