Malicious PDF — malware analysis report

Static analysis result for SHA-256 63620d0338cc0acb…

MALICIOUS

PDF

69.6 KB Created: 2021-01-23 09:38:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: f09da82411425469e49015a41e9d5844 SHA-1: 2e4bfb67da118129b6a5b403454da32c00ed3fb6 SHA-256: 63620d0338cc0acb33873df37c3712cb89261e72178960100d8bc667bf390f11
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://seumenha.ru/square?utm_term=jig+fixture+design+interview+questions+and+answers PDF link annotation
    • https://cdn.sqhk.co/noxomosanena/djfggid/17711764792.pdfIn PDF document text
    • https://cdn.sqhk.co/xatijafuwami/Pjf2HSL/tripp_trapp_stokke_high_chair.pdfIn PDF document text
    • http://bilapak.66ghz.com/22503129279.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414502/normal_5ffc2c08667a3.pdfIn PDF document text
    • https://piroveda.weebly.com/uploads/1/3/2/7/132740505/rofatibevowivolupek.pdfIn PDF document text
    • https://site-1176447.mozfiles.com/files/1176447/google_sheets_textjoin.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/gAyjche/ninijonufepolamuwigut.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/GY5Wqij/bagotozokoxawonejom.pdfIn PDF document text
    • https://cdn.sqhk.co/janonaset/fKFglja/vutagikibedib.pdfIn PDF document text
    • https://cdn.sqhk.co/rifebonapesi/jZAyEhd/best_helicopter_simulator_xbox_one.pdfIn PDF document text
    • https://zivejopoji.weebly.com/uploads/1/3/4/2/134266783/jofadixam.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nuwowafel.rf.gd/scala_rider_packtalk_manual_espaol.pdfIn PDF document text
    • http://loxometos.epizy.com/counter_terrorist_portable_mod_apk_free.pdfIn PDF document text
    • http://woxedizoxe.rf.gd/vacation_2015_parents_guide.pdfIn PDF document text
    • http://rubidolad.epizy.com/google_sheets_templates.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_off0000d498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD498 5380 bytes
SHA-256: 97d5be40c7b61e21fdfabd85004fa56c015d8b08c3f55762635406ae00d9a2b0
font_01_sfnt_off0000e706.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE706 10068 bytes
SHA-256: 1c127f63fdcbfb1af8603791112e9d5af5d6e0300c2ce17147a5174117c5a47c