Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2302131dc1350e2…

MALICIOUS

PDF

75.2 KB Created: 2021-02-11 04:03:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8bbd0f660544dfe9257effad7cbe6b14 SHA-1: 9f587f8a5532f37deb066ed046bf6ee1cd6fcfae SHA-256: c2302131dc1350e236b43095a23614efaa0a27bb25de07757c3ac81808d54ceb
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://yafferge.ru/123?utm_term=math+perplexors+expert+level+answer+key In PDF document text
    • https://cdn.sqhk.co/losokifape/4BjdCA2/56255959299.pdfIn PDF document text
    • http://subumobo.22web.org/brash_syndrome_case_report.pdfIn PDF document text
    • https://cdn.sqhk.co/baveninale/jgcl9Nj/samsung_pay_not_working_at_home_depot.pdfIn PDF document text
    • https://cdn.sqhk.co/matajikiwov/dSi3Cjd/jamodibewodogonexogovarax.pdfIn PDF document text
    • http://vutazumadik.iblogger.org/tivojorejofeditaridowamo.pdfIn PDF document text
    • https://cdn.sqhk.co/definuseju/bhigihh/electric_guitar_parts_kit.pdfIn PDF document text
    • https://cdn.sqhk.co/xurazegoba/axFNjgo/tefelabipubasilez.pdfIn PDF document text
    • http://betawajapasex.22web.org/50348886049.pdfIn PDF document text
    • http://feruwikabi.iblogger.org/consumer_reports_mattresses_issue.pdfIn PDF document text
    • http://hookup154.space/196838137043hjxn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://matunojusorim.epizy.com/calculer_un_chiffre_d_affaire_prvisionnel_formule.pdfIn PDF document text
    • http://tovukazemav.epizy.com/capitalization_worksheets_third_grade.pdfIn PDF document text
    • http://fobonerenajob.epizy.com/bepisozu.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/google_chrome_32_bit_windows.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/fastly_inc_annual_report.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_off0000e9a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A6 5296 bytes
SHA-256: b8dabcaa51a9507bf617fe59cf2900525a5a3ec734484c0ccbc4636205536d2d
font_01_sfnt_off0000fbc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC5 10832 bytes
SHA-256: f3f6ab6dcd441dd268fda8a832255e5c05f389e0a23141f97a496bb7eafd1e2c