Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cdbb7edb8c6015a…

MALICIOUS

PDF

67.1 KB Created: 2021-02-24 20:53:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3ebd2c5bbe928d5c2adabcd0844f7184 SHA-1: cd77402559ab2fb4e303b8de3887fc1e630ce724 SHA-256: 7cdbb7edb8c6015a7c3af3997c1d57c64a5d8a8bb2cca0d370c8f8f4ea4a1281
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crophysi.ru/wix?keyword=new+testament+greek+syntax+laminated+sheet+pdf In PDF document text
    • http://activa-fb.com/55560532420a2ycn.pdfIn PDF document text
    • http://idem-peshkom.ru/77260936390f4hn0.pdfIn PDF document text
    • http://conicppjry.bid/telupokon17uue.pdfIn PDF document text
    • https://fapixuguxoga.weebly.com/uploads/1/3/1/0/131070829/3875819.pdfIn PDF document text
    • https://losulojer.weebly.com/uploads/1/3/0/7/130739206/958f5133250a.pdfIn PDF document text
    • https://waniritapi.weebly.com/uploads/1/3/0/7/130739375/b077c7.pdfIn PDF document text
    • http://banolapisa.iblogger.org/65341036592.pdfIn PDF document text
    • http://wiregabjuk.fun/collection_osez_gratuityng15.pdfIn PDF document text
    • https://migirebunimalab.weebly.com/uploads/1/3/1/3/131383914/paluma.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://virefixifefuke.epizy.com/27656878712.pdfIn PDF document text
    • http://dimizisunope.epizy.com/17039730880.pdfIn PDF document text
    • http://xizoxenefodage.epizy.com/gosapumuvobawokanu.pdfIn PDF document text
    • http://vevofiwimim.epizy.com/the_expanse_season_5_release_date_uk.pdfIn PDF document text
    • http://wexugemo.epizy.com/39515004475.pdfIn PDF document text
    • http://meloxosiza.epizy.com/declaracin_de_bienes_y_rentas_y_registro_de_conflictos_de_inters_del_sigep.pdfIn PDF document text
    • http://vapefovofip.epizy.com/janobefimigifupugufasafeg.pdfIn PDF document text
    • http://bopexetosezulav.rf.gd/titijofizabagiwa.pdfIn PDF document text
    • http://xerifuxedu.rf.gd/lutheran_catechism.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_off0000c93c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC93C 5752 bytes
SHA-256: 450bed6ba50261603686748abdecb9355f7468cd475af6d5144936f847873863
font_01_sfnt_off0000dccd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCD 10156 bytes
SHA-256: 9d2835d980b9421578bf5acd8725cd55952637f2c97ccc48c162c3019ad3cfc4