Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0b88d368c0a5b71…

MALICIOUS

PDF

61.5 KB Created: 2021-01-23 22:32:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 67bf78745050ed6204787a1738d0d994 SHA-1: b63bd3e117e116d90b06591b14de25b95c9cc7bd SHA-256: f0b88d368c0a5b71db5b53e241e3a471cc39830a7df5f7f61994475fa817e1e1
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://seumenha.ru/123?utm_term=teaching+transparency+worksheet+answers+chapter+8 PDF link annotation
    • https://cdn.sqhk.co/zexukobesu/aPUhhje/musician_s_friend_corporate_office_phone_number.pdfIn PDF document text
    • http://moxokivotalunuz.iblogger.org/15354773694.pdfIn PDF document text
    • https://site-1256604.mozfiles.com/files/1256604/bhangra_empire_2014_video_free.pdfIn PDF document text
    • http://bukejasinopa.22web.org/treatment_for_oral_lichen_planus.pdfIn PDF document text
    • https://site-1206121.mozfiles.com/files/1206121/apa_publication_manual_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxumududu/0aYtgjf/american_pitbull_terrier_wallpaper_hd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478383/normal_60087dd0c7c48.pdfIn PDF document text
    • https://site-1168348.mozfiles.com/files/1168348/pamurovibedadumajiluvujox.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405650/normal_5ffc2c7e6bfb3.pdfIn PDF document text
    • https://cdn.sqhk.co/tubadaluzafu/hhcifgE/lemon_cake_recipes_using_cake_mix.pdfIn PDF document text
    • http://nagajavanof.22web.org/autocad_2013_64_bit.pdfIn PDF document text
    • https://cdn.sqhk.co/sezogitov/gghaijm/31270733261.pdfIn PDF document text
    • https://site-1166067.mozfiles.com/files/1166067/30761907306.pdfIn PDF document text
    • http://gawoxubut.22web.org/19614473033.pdfIn PDF document text
    • https://cdn.sqhk.co/javomekoru/ejhS5Q2/messenger_app_download_for_iphone.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vupikefugogulup.epizy.com/animation_desk_ultimate_apk.pdfIn PDF document text
    • http://vubixegigag.rf.gd/47118635653.pdfIn PDF document text
    • http://wusipoz.rf.gd/visio_2013_bpmn_2._0_shapes.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_off0000b4b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4B6 5564 bytes
SHA-256: b826aa96ad1a71bd40583945394adcade8ee6b12a9bf15db04e81b91c80c2dd2
font_01_sfnt_off0000c7b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7B7 9632 bytes
SHA-256: 197b3c1ab0270eaab7742434344a728c2f5e09b90b0f75cb07d9850d138ae33d