Malicious PDF — malware analysis report

Static analysis result for SHA-256 34ebd34bff97303b…

MALICIOUS

PDF

57.6 KB Created: 2020-10-04 21:25:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ddd3673f09c3f5c4db3c063aa281801e SHA-1: e1c75776f445218c8358e521cfc5f44c2da7caa7 SHA-256: 34ebd34bff97303b8a95625d14d441701f4368c11558774b88e808e98fdc6ffd
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://gettraff.ru/strik?keyword=download+shadowrun+pc In PDF document text
    • http://files.msacf.org/uploads/1/3/2/7/132740951/9726305.pdfIn PDF document text
    • http://files.danaschechter.com/uploads/1/3/0/7/130740190/105696b0267.pdfIn PDF document text
    • https://site-1038693.mozfiles.com/files/1038693/97135398536.pdfIn PDF document text
    • https://site-1036685.mozfiles.com/files/1036685/degesesivudafoxekoxu.pdfIn PDF document text
    • https://site-1042016.mozfiles.com/files/1042016/38039757952.pdfIn PDF document text
    • https://site-1039967.mozfiles.com/files/1039967/ralagaweximemur.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/5653a638-d05d-48d3-b3b7-59bf16e4c5dc/gululiwajezele.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e0b34b7-b79c-45a2-a03f-897307ed177c/38445926771.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cee156b0-932a-468e-999a-559b4dd5a4a4/51504306652.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cc06c75-2929-4576-a70c-727bd9020dc5/lemevedakinibagelapivubaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16038edd-1cfa-470f-8518-bf9f3f088094/pimodotomorapususolirogek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0475/8994/9596/files/east_whittier_middle_school_staff.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8846/5051/files/wopapuwolekisipilabitopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7926/8520/files/fm_transmitter_for_car_best_buy.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_off0000a3ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3AB 5252 bytes
SHA-256: 895c992177c874e3a7b40c3c0b91e8c2e479ff88ed22bf13104f50b09df16d7e
font_01_sfnt_off0000b599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB599 10540 bytes
SHA-256: 231ca5535157ac78ad9e86481f7f6ad65ab18eadf794ad5b1ec23fffa009b50d

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