Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe39ec5184a8116a…

MALICIOUS

PDF

63.7 KB Created: 2021-03-03 14:34:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4eb478428ea8f2267b6603bd46506e94 SHA-1: 7f235032c5d0ecb591b510635c263d1c8e48d179 SHA-256: fe39ec5184a8116afedb20521c41485b9c5208e2ad0705c1ef363970997c8d62
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://yafferge.ru/award?keyword=last+sacrifice+op+gg In PDF document text
    • http://salonly.xyz/nivedifiwifojat70pfd.pdfIn PDF document text
    • http://revilokepudidu.mygamesonline.org/38813512614.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415745/normal_5fdfa71a16f44.pdfIn PDF document text
    • http://pihodze.com/65551656690hayhu.pdfIn PDF document text
    • http://sandwichhq.club/how_to_scan_from_canon_mg2522kkmr0.pdfIn PDF document text
    • http://tosefabebiribow.scienceontheweb.net/vexuxisegexevof.pdfIn PDF document text
    • http://dronextactical.xyz/29629314628assjo.pdfIn PDF document text
    • http://it50life.pro/bosch_dishwasher_filter_parts_diagramfsm1t.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/dukexajuj/i_will_be_found_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/twitter_videos_to_camera_roll.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/conclusion_of_report_on_company_visit.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_off0000bed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBED0 5092 bytes
SHA-256: 70ea56f119598d7348ddbf182e06c7ab62f6f7ee114b01e98ee52e311f3e6a4d
font_01_sfnt_off0000d037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD037 10072 bytes
SHA-256: 2c6e2f867c9c928e07a428b8fa5d9bf3014b5bd4092218d2b8fd133c8b1c6b11