Malicious PDF — malware analysis report

Static analysis result for SHA-256 cba3087f16e16d8a…

MALICIOUS

PDF

73.0 KB Created: 2021-03-04 16:41:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 62132c8eec48e1bdc8ef738eb47ff550 SHA-1: 280cc5d9ef8cab8a2b1738d2590eebe3f20df5f6 SHA-256: cba3087f16e16d8a7679f1d9d8caa63f76a8bc91b97cf159cc386767f0fe691b
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://midufefew.ru/123?utm_term=shirley+jackson+movie+true+story PDF link annotation
    • http://ukrinsure.com/17195796995pjb2c.pdfIn PDF document text
    • http://vvinorama.fun/40252700501filde.pdfIn PDF document text
    • http://boxijogirexu.medianewsonline.com/twilight_book_cover_collection.pdfIn PDF document text
    • http://ruwufuwetoj.mygamesonline.org/the_canterville_ghost_favourite_character.pdfIn PDF document text
    • http://vomamafawib.scienceontheweb.net/what_does_444_mean_in_quran.pdfIn PDF document text
    • http://tufataf.22web.org/61264686981.pdfIn PDF document text
    • http://carbackseat.site/55584940087wm957.pdfIn PDF document text
    • http://vivekawiga.sportsontheweb.net/vilokakodidotak.pdfIn PDF document text
    • http://lighterusb24.site/rockwell_automation_software_by_serial_numberqflpw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zevovalik.epizy.com/amrinder_gill_songs_ki_samjhaiye.pdfIn PDF document text
    • https://69b3109a-7cce-4514-9193-d2106d9976ab.filesusr.com/ugd/3c2969_d3186880eb6c47849414d6470d19c9cc.pdf?index=trueIn PDF document text
    • https://adc0bc6f-2b4d-4951-bce0-9128d215fa34.filesusr.com/ugd/5ea4d5_b4ab2d7fa2584d36b53a514f4a4b6324.pdf?index=trueIn PDF document text
    • http://wuwusawoviwu.rf.gd/castrol_oil_application_guide.pdfIn PDF document text
    • http://zasaraba.epizy.com/dolaletotimuwise.pdfIn PDF document text
    • http://bivojeda.atwebpages.com/nururorafizeduvapope.pdfIn PDF document text
    • http://rajamuviw.epizy.com/pezalo.pdfIn PDF document text
    • https://8488b7ac-84bc-45ae-88ed-26841205fc59.filesusr.com/ugd/7cda3c_cd3f4ee778ce40bd8293ff7d34cd7c14.pdf?index=trueIn PDF document text
    • http://dapolejalufimi.rf.gd/planet_earth_2_deserts_worksheet_answer_key.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_off0000e15e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15E 5444 bytes
SHA-256: a7f8c068474bf76972014fb8dbe7bd078e7c7c05821feeba6b1de45f355ca73d
font_01_sfnt_off0000f3c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C6 10348 bytes
SHA-256: c7a31a9770c0515e5bdf9bb78897463b245421c20d67152f53f0b02c6d6053b9