Malicious PDF — malware analysis report

Static analysis result for SHA-256 07fd221cd0598dc6…

MALICIOUS

PDF

61.3 KB Created: 2021-02-14 11:22:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7e02a8875b02ea3cd3aea906c6e1a2d5 SHA-1: 755349d00f934142f611e21cbe496f536f0bb8d5 SHA-256: 07fd221cd0598dc6ea3129672d9061f3406d8d17273a193962b3c27e27868ae7
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://druttle.ru/wb?keyword=algebra%201%20variables%20and%20expressions%20answers PDF link annotation
    • http://store50off.info/33278887324a23zl.pdfIn PDF document text
    • https://jarivilil.weebly.com/uploads/1/3/4/0/134012847/4a6fa7177.pdfIn PDF document text
    • http://neuroncraft.online/15156225909ja05q.pdfIn PDF document text
    • https://cdn.sqhk.co/xojelumegasi/hdkhb5B/espn_chicago_radio_podcast.pdfIn PDF document text
    • https://namowabe.weebly.com/uploads/1/3/4/0/134000139/9576466.pdfIn PDF document text
    • http://yozi.store/4339892821ajt37.pdfIn PDF document text
    • https://cdn.sqhk.co/xaleteser/fCejchd/wivanilakotizalori.pdfIn PDF document text
    • http://vixilebi.iblogger.org/zatokonaliwi.pdfIn PDF document text
    • http://kind-insta.site/barbell_back_squat_proper_formycifs.pdfIn PDF document text
    • http://smeshnoykir.space/57599788801dk0t9.pdfIn PDF document text
    • https://suxamoka.weebly.com/uploads/1/3/4/8/134876373/2689302.pdfIn PDF document text
    • http://profapp.pro/the_blood_spattered_bride_1972_freevmmy1.pdfIn PDF document text
    • https://cdn.sqhk.co/mujexoxa/Khcgdjg/power_bi_report_tooltip_embedded.pdfIn PDF document text
    • https://lurotafimeka.weebly.com/uploads/1/3/0/7/130740015/bawek_lasedi_vuriwag.pdfIn PDF document text
    • https://cdn.sqhk.co/kulukopupiw/bhagdcr/27077303320.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000b29e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB29E 5528 bytes
SHA-256: c0e9a1a86d12f5475327fde7aab3de87c93b68d8db1a31c3f3f63fd99b56650e
font_01_sfnt_off0000c58b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC58B 10156 bytes
SHA-256: 6b06d57a8fdf6841b7c6054c87e68da0f132afb05eb01c350aaf8257972b9577