Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8193a711f506dc9…

MALICIOUS

PDF

72.5 KB Created: 2021-03-04 08:19:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 74458716e4eb5f0a02f041775e8dd6c4 SHA-1: 8e31d73489d33a1db5862f0ba36cfc308f793fb0 SHA-256: c8193a711f506dc909e92465e6b8d573d972324a34b28b9d46aa87fa5ab30154
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://vilenefex.ru/award?keyword=1966+aristocrat+lo+liner+for+sale PDF link annotation
    • https://cdn.sqhk.co/zetobazox/cHhgijP/lejazapelisam.pdfIn PDF document text
    • https://fabebebu.weebly.com/uploads/1/3/2/7/132740756/tabepabumimufilo.pdfIn PDF document text
    • https://xojakonokixamu.weebly.com/uploads/1/3/1/1/131164577/5927061.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425723/normal_5fce796a2f0e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389606/normal_6003114be6e47.pdfIn PDF document text
    • https://cdn.sqhk.co/mufipofunup/ihbUDha/movie_catalog_meaning.pdfIn PDF document text
    • http://bamiluzigu.mygamesonline.org/what_does_fluency_mean_in_math.pdfIn PDF document text
    • http://dajexori.mypressonline.com/67754886963.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485015/normal_600a6be1c173f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403410/normal_6003a9944af6b.pdfIn PDF document text
    • http://sevowina.medianewsonline.com/design_patterns_in_javascript_udemy.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/fufumuxadisatuj.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
    • http://fowimifefezujo.myartsonline.com/how_to_use_google_maps_to_plot_multiple_locations.pdfIn PDF document text
    • http://watusatuvor.myartsonline.com/8290688561.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD195 4932 bytes
SHA-256: 7103e5d61caae9bbd7a0f15b586d37fab043ba9b47dd66e43f9891bced762ae0
font_01_sfnt_off0000e254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE254 10740 bytes
SHA-256: 86c0c4242021d03cba9f347d63d0c9d50b9dfffe9e829cf29a5196f90223166f
font_02_sfnt_off00010714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10714 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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