Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb4c278598d26130…

MALICIOUS

PDF

71.4 KB Created: 2021-03-07 19:10:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c07a8a290ee4b7846bd9a250d39ef1c0 SHA-1: bcfbf0e0b6123d36617e13556fe226321649a5ca SHA-256: cb4c278598d26130454097d7950d036e390260a7792aa37123f50dc12470b9ac
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=los+protocolos+de+los+sabios+de+sion+casa+del+libro PDF link annotation
    • http://rasudilikid.mywebcommunity.org/mary_poppins_cast_2019_balloon_lady.pdfIn PDF document text
    • http://tugrull.com/97683933686mozg3.pdfIn PDF document text
    • http://luminar4-download.xyz/861969856337pao5.pdfIn PDF document text
    • http://rigovutamejebum.iblogger.org/appvalley_spotify_songs.pdfIn PDF document text
    • https://zekupepub.weebly.com/uploads/1/3/5/9/135992873/2fd40d.pdfIn PDF document text
    • https://jubekajaduv.weebly.com/uploads/1/3/4/3/134345699/78a678b6.pdfIn PDF document text
    • http://instapriz.website/makeup_revolution_advent_calendar_2020_australiavhql7.pdfIn PDF document text
    • http://jenenirefu.iblogger.org/zobugepezufajoxaz.pdfIn PDF document text
    • http://coupons2020.info/bikuwiguvizodevedide2x2im.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xagazusapikim.epizy.com/larusirupovazuketaxe.pdfIn PDF document text
    • http://balesalefune.epizy.com/slideshare_ppt_without_login.pdfIn PDF document text
    • http://pumakiwidali.rf.gd/kegag.pdfIn PDF document text
    • http://saxodanokijaj.atwebpages.com/81254319528.pdfIn PDF document text
    • http://nexizali.epizy.com/imbued_zamorak_cape_guide.pdfIn PDF document text
    • http://tosopipates.epizy.com/mitochondria_and_chloroplast_worksheet.pdfIn PDF document text
    • http://relivoziz.atwebpages.com/40456126083.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c457706-4e6f-46da-b4f2-20800c67f8b8/wimomevezubireled.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c8b886a-24f5-428a-a300-0a9a21f31a5c/is_python_better_than_r_for_machine_learning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/460dc970-4679-448f-9126-29dd28f29e0f/bedejuvesogafaxofagorer.pdfIn PDF document text
    • http://puruguniteri.rf.gd/71745016891.pdfIn PDF document text
    • http://mirokuf.rf.gd/bang_bang_english_remix_song.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_off0000dac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC2 5148 bytes
SHA-256: 25a2b291c9a51c65b5f08f6397613193545859f244dcac63d24cc4284bcb0832
font_01_sfnt_off0000ec49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC49 10996 bytes
SHA-256: eb40ac1d06bdcf0adda7add9b53251d8fc7ef389de945bc6c5d2414aecfc379c