Malicious PDF — malware analysis report

Static analysis result for SHA-256 940ecbb1ecc3c115…

MALICIOUS

PDF

71.6 KB Created: 2021-02-27 17:55:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1d6aa6dd88cfe21aa1e78181027ba19b SHA-1: 6f9b26187edfe0a995a1cb79d1168990bb08f8ce SHA-256: 940ecbb1ecc3c1155714fd82124fb80fcac2fb1546680422ce90443cdf617786
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/award?keyword=dometic+brisk+air+2+heat+pump PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4446286/normal_6001be7919df9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464863/normal_5fee1bc4b38f7.pdfIn PDF document text
    • https://liwitozawaben.weebly.com/uploads/1/3/4/0/134042828/jitubim.pdfIn PDF document text
    • https://lutasuboli.weebly.com/uploads/1/3/2/7/132740498/nadewogisun.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463287/normal_5ffa0e6507fc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480383/normal_5fd86c242e305.pdfIn PDF document text
    • https://rukufutuseju.weebly.com/uploads/1/3/4/7/134748195/7815653.pdfIn PDF document text
    • https://dinabowufijub.weebly.com/uploads/1/3/4/7/134751612/sesibugujizikanose.pdfIn PDF document text
    • https://dawerofe.weebly.com/uploads/1/3/4/3/134361643/5f1051b9f0902c4.pdfIn PDF document text
    • https://rojuligu.weebly.com/uploads/1/3/0/9/130969709/862310.pdfIn PDF document text
    • https://panejukirid.weebly.com/uploads/1/3/1/6/131606092/tizasugi.pdfIn PDF document text
    • https://tilotifibow.weebly.com/uploads/1/3/4/5/134505855/0674a8a856.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/nazekisigiduz/thinking_skills_worksheets_for_grade_7.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/96012760130.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/beach_buggy_racing_2_game_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/futaba_palace_boss_guide.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_off0000dc96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC96 5476 bytes
SHA-256: cd4821eca13e90536c958942df3e1735c56df79c6eb6ac94269ac6cbeca16b5b
font_01_sfnt_off0000ef0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0E 10092 bytes
SHA-256: fd1d0a2ce6f6fbb07f7320f7ac1a72edeb7b2279c98cc12f59ee6738891acf9a