Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cb5dbcb425d0bbd…

MALICIOUS

PDF

71.1 KB Created: 2021-02-27 13:44:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 8714021f58e82585eb9554b66a32ff07 SHA-1: 0824074f6e02639c5ebb9231b299ea56677e057a SHA-256: 3cb5dbcb425d0bbd27417a14643e912a7a465df0bf0cd3debae50bcdc3041332
266 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://xezojetit.ru/wb?keyword=reset%20password%20d PDF link annotation
    • http://ranebixulukaku.iblogger.org/sewofi.pdfIn PDF document text
    • https://vunozeguwogiwe.weebly.com/uploads/1/3/4/7/134745761/zurarupade-tukolokifi.pdfIn PDF document text
    • https://didejigoximatex.weebly.com/uploads/1/3/1/0/131070501/raravirux.pdfIn PDF document text
    • https://misiwutikamiba.weebly.com/uploads/1/3/4/6/134601431/nebudidu-sisowopejibuj-zulufopoxo-vapawinor.pdfIn PDF document text
    • https://robigatif.weebly.com/uploads/1/3/0/8/130873787/3001141.pdfIn PDF document text
    • http://mokemowowove.mygamesonline.org/john_deere_gator_parts_for_sale_uk.pdfIn PDF document text
    • https://boviseweduxiraz.weebly.com/uploads/1/3/0/7/130776594/dofojilefokinaz-wodaz-pakuxubi.pdfIn PDF document text
    • https://fonekukiko.weebly.com/uploads/1/3/5/3/135393218/4bed1844f90.pdfIn PDF document text
    • https://salexutoxor.weebly.com/uploads/1/3/4/7/134761189/gunofegapajeruf-pabej-tevafaxosos.pdfIn PDF document text
    • http://lixorajepidil.mygamesonline.org/romeo_y_julieta_1875_cigarros_review.pdfIn PDF document text
    • https://fokutape.weebly.com/uploads/1/3/2/8/132814024/bosogaj_nurofoti_manefora_xireroxugugulig.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/new_cholesterol_guidelines_uk.pdfIn PDF document text
    • http://xilutetixu.epizy.com/24677928420.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/geely_automobile_holdings_annual_report_2017.pdfIn PDF document text
    • http://kigitom.epizy.com/king_arthur_movie_filmywap.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_off0000d9ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AD 5460 bytes
SHA-256: 6039471c52ce773ac2524a07503e46b46aa143564923684edf83cc4f4530e0fe
font_01_sfnt_off0000ec79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC79 10316 bytes
SHA-256: 69cbad0854050de7fac0533ae47968645d8ad9f20f8b92215daeafe21d7ca711