Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6237b4b5232f095…

MALICIOUS

PDF

69.6 KB Created: 2021-03-04 10:42:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c8ed58bbf6f5b724517e2edcfa8d265d SHA-1: 28d590a00a895185bb0b896edf2772799f71d277 SHA-256: c6237b4b5232f095e3370974c5bc2b4c5c8bd517d3e41c58143a5fe35171dbc1
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://zajinet.ru/award?keyword=how+to+program+charter+remote+to+control+tv+volume PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4407747/normal_5ff62ffa563ca.pdfIn PDF document text
    • https://dukalafaziwemum.weebly.com/uploads/1/3/4/7/134772398/joniditajokevegusadi.pdfIn PDF document text
    • http://pemojubeku.iblogger.org/printable_immunization_form_3231.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471941/normal_5fe27f092928c.pdfIn PDF document text
    • http://givupuxorow.iblogger.org/85126935565.pdfIn PDF document text
    • https://vusasetimonumak.weebly.com/uploads/1/3/4/8/134855164/9460540.pdfIn PDF document text
    • http://levipek.22web.org/python_tutorial_for_beginners_coursera.pdfIn PDF document text
    • https://ruponijipatom.weebly.com/uploads/1/3/3/9/133999380/lusixako_nupavozil.pdfIn PDF document text
    • http://xaxikobovivo.22web.org/cadillac_sts_2007_owners_manual.pdfIn PDF document text
    • http://tupakewufitid.iblogger.org/contingency_plan_template_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dajidagetulawu.epizy.com/jovenowofutewam.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/how_to_fix_a_leaky_faucet_neck.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/python_programming_an_introduction_to_computer_science_github.pdfIn PDF document text
    • http://majukukosiw.rf.gd/pintura_surrealista.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/kozijodijasodubisoxa.pdfIn PDF document text
    • http://jimanujomubil.epizy.com/john_deere_x320_steering_gear_replacement.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_off0000d4a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A8 5284 bytes
SHA-256: a0187986b3cbf9c7ba3260b538f5f1f094a032afbdaa58f71d207ad86e77c194
font_01_sfnt_off0000e690.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE690 10104 bytes
SHA-256: 5246f9fb071905bec128670f90717fa6cd889b5128322dafae5ce50af01c160b