Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4d0d85b2bee064b…

MALICIOUS

PDF

64.4 KB Created: 2021-02-10 03:50:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0048107350831af3aaf43b9de55c0066 SHA-1: 4c73bf2819b018bebf3bec1cbf3a32b2a43ad71b SHA-256: b4d0d85b2bee064bb8876a118a7b28bf92c37728101a95c573d06eb56208fa26
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://bologen.ru/123?utm_term=kidney+shaped+table+clipart PDF link annotation
    • https://judadumoxa.weebly.com/uploads/1/3/4/7/134718892/c656d03399b.pdfIn PDF document text
    • https://cdn.sqhk.co/gotakavapu/c2HKIic/arkham_knight_knightfall_protocol_explained.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/hexjdic/motorola_phones_metro_pcs.pdfIn PDF document text
    • https://cdn.sqhk.co/lobinazema/jidjclh/super_contraption_maker_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480581/normal_5fe0b663a6407.pdfIn PDF document text
    • http://igcopyrightverify.com/email_signature_photoshop_template9p5y6.pdfIn PDF document text
    • https://fofapabijutoza.weebly.com/uploads/1/3/4/7/134713913/9ac4c.pdfIn PDF document text
    • https://xopapukewude.weebly.com/uploads/1/3/1/4/131408664/jurexubajudu-jekikinev-povemu-botan.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478961/normal_5fe37c7815d12.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460457/normal_5fc59795a3176.pdfIn PDF document text
    • https://cdn.sqhk.co/bifoligi/gqJzjbk/ralovokinikagowomadokabif.pdfIn PDF document text
    • http://itclick.pro/street_fighter_4_ultra_moveszzbu3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446494/normal_5fe8908b4e08b.pdfIn PDF document text
    • https://cdn.sqhk.co/raninogozo/bjdqjqE/dezefulowex.pdfIn PDF document text
    • https://mapunexi.weebly.com/uploads/1/3/3/9/133999872/4156752.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000bfbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFBD 5372 bytes
SHA-256: 21219ae2fb3826561f365a7a4f5539df59b43a271925ab60effe47db2bcf920b
font_01_sfnt_off0000d204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD204 10312 bytes
SHA-256: 205027e1a6353d6cf354e73205c0ce685ee688f34f2e42a6bad9c40023807a50