Malicious PDF — malware analysis report

Static analysis result for SHA-256 935efe9081d28963…

MALICIOUS

PDF

72.1 KB Created: 2021-02-14 06:00:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ccdb65c01fdf3809dc4ae30ae30580b1 SHA-1: b1884e88e101ac673993c5a1ad331427b96d518a SHA-256: 935efe9081d28963af2cb2bbf187faf571d195ea33fa9fadb8c7938ebdb1e5f1
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://druttle.ru/wb?keyword=cisco%20finesse%20web%20services%20developer%20guide%20release PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408461/normal_5ff9c1878a262.pdfIn PDF document text
    • https://noremovex.weebly.com/uploads/1/3/4/8/134883944/zonugo_vofinadi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416790/normal_5fc7eae30113c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444885/normal_5fd6242a56d9a.pdfIn PDF document text
    • http://pannochki-art.com/sedebodogobigpo8ws.pdfIn PDF document text
    • https://zezojafoxivofed.weebly.com/uploads/1/3/4/5/134528913/5637187.pdfIn PDF document text
    • https://rudusixan.weebly.com/uploads/1/3/0/7/130775573/rumoperurovu.pdfIn PDF document text
    • https://gubizelejipeter.weebly.com/uploads/1/3/4/1/134131403/1637632.pdfIn PDF document text
    • https://cdn.sqhk.co/bujavenizake/ZijxnOu/norse_gods_list_of_names_and_powers.pdfIn PDF document text
    • http://ampinternational.org/peppa_pig_golden_boots_bookfyuxk.pdfIn PDF document text
    • https://cdn.sqhk.co/vefuwebilux/U54hfFG/angry_neighbor_apk_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/rufadexu/j14gfje/68445204175.pdfIn PDF document text
    • http://giveaway2020.info/pizufolegolibiwexufalafehuj0i.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/voropa/katinig_patinig_worksheets_grade_3.pdfIn PDF document text
    • http://satonavuka.rf.gd/teamviewer_full_crack.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_off0000dd97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD97 5520 bytes
SHA-256: 428ac465221f4fef9f0c7728560742bb9e3e38789045f3dc93f9c982fc6bf8ad
font_01_sfnt_off0000f07c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF07C 10216 bytes
SHA-256: 50a7682efeddf683664be76d09e21c7e4bc39138380b346daae7f46bf05398cd