Malicious PDF — malware analysis report

Static analysis result for SHA-256 99b0b6daa24bf723…

MALICIOUS

PDF

68.2 KB Created: 2021-03-04 20:50:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2e4db4f610898c9b2e50b8991cdf86e0 SHA-1: 84f3e954f25c1fc47e85913e2cd8cf3ec85f265d SHA-256: 99b0b6daa24bf723852094c16a1130d6719fd8597950db11f6cec69709fa089b
126 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
  • 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://fokemale.ru/award?keyword=courts+of+heaven+for+beginners+youtube PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455645/normal_60010ea9066ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403264/normal_6007d2a7d1d98.pdfIn PDF document text
    • http://stikc.xyz/menobediboxawexatevamohfbr.pdfIn PDF document text
    • http://rijigikesezaga.mypressonline.com/what_is_u_in_hieroglyphics.pdfIn PDF document text
    • http://foodguideblog.com/soporovarexenozuan96.pdfIn PDF document text
    • http://lusaxesa.iblogger.org/5429870292.pdfIn PDF document text
    • http://sparzha.club/how_to_find_time_in_half_life_equationkdxr1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426062/normal_602d5d66ea02b.pdfIn PDF document text
    • http://yesitalia.fun/what_is_the_formula_of_speed_of_lightdt0p0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418184/normal_5fd7a36d3297c.pdfIn PDF document text
    • http://usesucre.pro/590710071847v4dw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495390/normal_5fd26c5b6da0d.pdfIn PDF document text
    • http://kopuvimu.scienceontheweb.net/lukokuboxodexup.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/ritoma/enough_too_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/25766889520.pdfIn PDF document text
    • http://nedomawof.rf.gd/rokawekipuvuxitut.pdfIn PDF document text
    • http://diwulabasiluxe.epizy.com/avery_file_label_template_5366.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/75517916932.pdfIn PDF document text
    • http://koxosam.rf.gd/how_to_thread_a_old_singer_sewing_machine_model_237.pdfIn PDF document text
    • http://resisojopemolo.epizy.com/annexure_form_b1.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_off0000d05d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD05D 5204 bytes
SHA-256: fcd6cc794a804f8b64f07a30b52e68118e2a59c8241cd6862dd9332d3aa856d3
font_01_sfnt_off0000e21a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE21A 9712 bytes
SHA-256: 44d889edff63473ce2b0118dbac80ff40a9aac3ff614590f625a7d17b1380246