Malicious PDF — malware analysis report

Static analysis result for SHA-256 af71dfe493894859…

MALICIOUS

PDF

64.6 KB Created: 2021-02-03 20:03:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 06608b7d25eed41205ab227a52e7a2ee SHA-1: f9f70480c28c9aeac5b85c9439e5425429ba829d SHA-256: af71dfe49389485925b34dafdd7a0a26cece05a988623c33bea2f2e23c393894
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://maypoin.ru/wb?keyword=answers%20hq%20noob%20badge%20email PDF link annotation
    • http://ribupisid.22web.org/tadimabopemezibuxojud.pdfIn PDF document text
    • https://sapuvitajesi.weebly.com/uploads/1/3/0/7/130776539/5421485.pdfIn PDF document text
    • http://kogiwonewaveg.iblogger.org/tokoh_aliran_behavioristik.pdfIn PDF document text
    • https://kepubaxolawava.weebly.com/uploads/1/3/4/7/134703856/melesojuwijojotofi.pdfIn PDF document text
    • https://namobilezivi.weebly.com/uploads/1/3/1/8/131857476/pabamipob-loruxixigasutev-dojurakagepepu-pigosuwofiru.pdfIn PDF document text
    • https://jerubezefago.weebly.com/uploads/1/3/0/8/130874212/dijedogopeboxewo.pdfIn PDF document text
    • http://auth02mobility.com/harry_potter_and_the_goblet_of_fire_book_bloomsbury3qsxj.pdfIn PDF document text
    • https://foluxafan.weebly.com/uploads/1/3/5/3/135397430/624362.pdfIn PDF document text
    • http://copyrightsupporteds.com/identifying_accidentals_music_theory_worksheet_answersnmv7e.pdfIn PDF document text
    • http://pomirkapa.site/en_10016_2k874x.pdfIn PDF document text
    • http://mestorating.ru/captive_aire_5424_nd-2_manual4ov1j.pdfIn PDF document text
    • https://zazubutovure.weebly.com/uploads/1/3/1/8/131857419/jevuzevamagototavibu.pdfIn PDF document text
    • https://relulime.weebly.com/uploads/1/3/4/3/134384492/jaxiv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pixoriwabivonol.rf.gd/44342812084.pdfIn PDF document text
    • http://tinuzutajalik.epizy.com/wilojusubofud.pdfIn PDF document text
    • https://signin.ea.com/p/web/resetPassword?execution=e1104710591s1In 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_off0000bf7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF7A 5584 bytes
SHA-256: 996b10979ed1641476b2d5e8a5472b371ec2184f46c931306e1103d5cb2d13fa
font_01_sfnt_off0000d254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD254 10332 bytes
SHA-256: 49f7f92099fbb1ab5a17a7d10c0f17debe8f46eb72bec97243cea90d6c27590b