Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1b90006cb33e83d…

MALICIOUS

PDF

66.9 KB Created: 2021-02-09 18:51:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 96de7f2a66da5e7d1058060c161dc516 SHA-1: 9f2c791188dca2fd73ee962b4f41916ce16aa02d SHA-256: f1b90006cb33e83d42e35e6dcba6bee9a5b07585cda90b4d12b0e816f1e31e98
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wb?keyword=cs%20go%20best%20autoexec PDF link annotation
    • http://niludop.22web.org/cdc_flu_vaccine_fact_sheet_2019.pdfIn PDF document text
    • http://poradoit2.site/pijodemira79w75.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464314/normal_5ff615a07182a.pdfIn PDF document text
    • https://cdn.sqhk.co/jexozumumanu/iwbgdjd/can_you_learn_to_sing_opera.pdfIn PDF document text
    • http://naziniza.22web.org/motebivuzenugipiv.pdfIn PDF document text
    • http://boldly-grow.com/7189555896t7zed.pdfIn PDF document text
    • https://cdn.sqhk.co/nukuzulu/jqejhig/84866065905.pdfIn PDF document text
    • http://antinomi.design/32055893135cpzdz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446494/normal_5ffc05202a61a.pdfIn PDF document text
    • http://redit.fun/4785527658696qgb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://golujaxi.epizy.com/honing_guide_for_chisels_and_plane_blades.pdfIn PDF document text
    • http://mirajiletumumi.epizy.com/black_wallpaper_wood.pdfIn PDF document text
    • http://pakefuvusenoz.rf.gd/sadufo.pdfIn PDF document text
    • http://bamusob.rf.gd/converting_fraction_to_percent_word_problems_worksheet.pdfIn PDF document text
    • http://wevikokuzufos.epizy.com/wibegelupiwegul.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_off0000cabd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCABD 4952 bytes
SHA-256: 971bc394cde29bb6009575d6a68e2d954940650c3af8206e8e679c07d9c1bf4f
font_01_sfnt_off0000dbb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB2 10704 bytes
SHA-256: 6e4b4a5b5696e5848cad03ab850408ddb98c2c28051048a8437454f8f367957a