Malicious PDF — malware analysis report

Static analysis result for SHA-256 66c73998be8a7032…

MALICIOUS

PDF

72.8 KB Created: 2021-02-15 04:02:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5fc0159c286e6b1b8ddb5e5bc448c4fe SHA-1: 28f8d9cbb943869331d400863d64896b4d89f4a7 SHA-256: 66c73998be8a70322298bd8105fac46e39f2aa9bc4531609ee10d5e83720db32
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://jottigo.ru/wix?keyword=bissell+quicksteamer+plus+instructions PDF link annotation
    • https://cdn.sqhk.co/mifodirula/ihjjfii/driving_simulator_games_xbox_one.pdfIn PDF document text
    • https://sukaxivex.weebly.com/uploads/1/3/4/8/134895869/06a7ac513af.pdfIn PDF document text
    • http://8bitbeardsco.com/laturajidesijuliseraxidobla9d.pdfIn PDF document text
    • https://jarowezib.weebly.com/uploads/1/3/0/8/130813985/bavigopamoba.pdfIn PDF document text
    • https://lufeziwupidel.weebly.com/uploads/1/3/5/3/135345985/peromizumifisitin.pdfIn PDF document text
    • https://togajakuro.weebly.com/uploads/1/3/1/4/131409127/66a0e82bd40629d.pdfIn PDF document text
    • https://gikoberi.weebly.com/uploads/1/3/0/9/130969260/jurivum.pdfIn PDF document text
    • https://muberelikaxisax.weebly.com/uploads/1/3/1/1/131163953/kogak-bikonenaso-sumewas-sogifig.pdfIn PDF document text
    • http://raliwoze.iblogger.org/irac_method_of_answering_law_questions.pdfIn PDF document text
    • https://gudojovevisepu.weebly.com/uploads/1/3/4/3/134314990/d633672a8111d1.pdfIn PDF document text
    • http://gikilebi.iblogger.org/kowunur.pdfIn PDF document text
    • https://rubuvewoxuvima.weebly.com/uploads/1/3/4/8/134873715/1165342.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://vugozagiduzek.rf.gd/chapter_13_worksheet_drivers_ed.pdfIn PDF document text
    • http://popeladidet.epizy.com/jigakotajefirerowitove.pdfIn PDF document text
    • http://robuveg.epizy.com/plotting_quadratic_functions_worksheet.pdfIn PDF document text
    • http://potopaf.epizy.com/14448212867.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d39f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD39F 5200 bytes
SHA-256: ee186f2fee8bb8ac68f10b336e4d1500955cffd4fb16ac51e317178c0bae90a5
font_01_sfnt_off0000e530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE530 10220 bytes
SHA-256: 818f2eae932ca1bad0fdf357b5070468aefde14009190d4227f456339fa8e2af
font_02_sfnt_off00010817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10817 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34