Malicious PDF — malware analysis report

Static analysis result for SHA-256 febc83614583e3aa…

MALICIOUS

PDF

72.6 KB Created: 2021-02-25 07:07:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3818d985b11182711c59f8582ca9f1c9 SHA-1: 892a83ee2541cfdba947c5bd25f84d5654a1bcc6 SHA-256: febc83614583e3aa7a75b7991a56a71334b16e8826f4bf5aaf08c3ad240151a7
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://druttle.ru/award?keyword=how+to+soothe+plantar+fasciitis+pain PDF link annotation
    • http://alternativeinfluencenetwork.net/kinoconsole_pc_setup_guide2fory.pdfIn PDF document text
    • https://cdn.sqhk.co/jurufovowufu/Rxthfgc/52738660891.pdfIn PDF document text
    • https://cdn.sqhk.co/jiwejujorod/RWxhV2D/51021346346.pdfIn PDF document text
    • https://ridijetovemeriw.weebly.com/uploads/1/3/5/9/135984977/29a828f3ae4fda.pdfIn PDF document text
    • https://tusosalowikos.weebly.com/uploads/1/3/1/4/131453146/vofepadowigu-lurubu-kipoponuluzoxi.pdfIn PDF document text
    • https://bimidupixujeg.weebly.com/uploads/1/3/4/3/134319160/bafuko.pdfIn PDF document text
    • http://metalllift.ru/sojimidvvgyb.pdfIn PDF document text
    • https://mulokigapasol.weebly.com/uploads/1/3/1/0/131070847/fojexataxipu.pdfIn PDF document text
    • http://repair-foto.ru/vuzipinudejotopajilbrkyb.pdfIn PDF document text
    • https://cdn.sqhk.co/daxozazon/xB3hghh/jobakepamodarurigajakude.pdfIn PDF document text
    • https://cdn.sqhk.co/tiviluluje/hhgfiyk/skylanders_ring_of_heroes_release_date_singapore.pdfIn PDF document text
    • http://disconto50.pro/has_anyone_won_sexiest_man_alive_twicexk6ui.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/nefomojuwet/ubuntu_iso_file_free_for_vmware.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/46432693987.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_off0000df15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF15 5156 bytes
SHA-256: 92636907791c794c5070410ce4843f309f71d8840dc817e7395c17e06ada625e
font_01_sfnt_off0000f0a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A9 10652 bytes
SHA-256: 14ac5907a16352d90d2c0e9a32a9bc0e78617ba78fc40c5c93278e5cd92bd1b2