Malicious PDF — malware analysis report

Static analysis result for SHA-256 1495dfc360780b58…

MALICIOUS

PDF

72.2 KB Created: 2021-02-25 09:40:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8de4788435f15bd6ea328aef513d0277 SHA-1: 7caaf6e6e0295c40415051b2116c64dd889bc1d9 SHA-256: 1495dfc360780b5891f0511a71716a9af665a9f8430998d09efe027b3d4fa10d
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wix?keyword=weather+forecast+worksheet+elementary PDF link annotation
    • http://nubolutlion.xyz/zeforesufef9k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450036/normal_5fc8009b7cad1.pdfIn PDF document text
    • http://trynutra.shop/gatosukukojetakuwl7l5c.pdfIn PDF document text
    • http://salet.store/jio_video_calling_appsp5pya.pdfIn PDF document text
    • http://newser.site/asma_gina_2020_espaolav4dh.pdfIn PDF document text
    • http://tur8osale.site/fifikaxatixoguremigo5yj3s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410678/normal_600545c86b113.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410722/normal_6009107b7e93c.pdfIn PDF document text
    • http://morj.space/schedule_template_pagese5m07.pdfIn PDF document text
    • http://yourdesk.website/ficha_decadactilar_formatovhu2o.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/bomberman_hardball_iso.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/19795292383.pdfIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/vilutikim.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/diaphragmatic_hernia_management_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/bullying_in_schools.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/vewekosa.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_off0000dd39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD39 5392 bytes
SHA-256: d474cdae116bece8963ac687775736f6e39210eef254729494d15bd80c688b9a
font_01_sfnt_off0000ef85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF85 10548 bytes
SHA-256: d44cd1a3e4950154bb5659d10a7834d7ed778e0710032af24d6a86ee8703b285