Malicious PDF — malware analysis report

Static analysis result for SHA-256 d83238f57510fde7…

MALICIOUS

PDF

71.5 KB Created: 2021-02-15 10:59:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6a7fdf4860955f28c05c61a36410f834 SHA-1: a725d2dc5e079b6f6e70cb666df0a2b5830dd4a4 SHA-256: d83238f57510fde788567a7f613e4e31d4f47eeedb2ad04900b6eb7aa83fbfaa
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=holley+390+cfm+carb+manual+choke In PDF document text
    • http://ferunasivagu.iblogger.org/alcatel_lucent_manual.pdfIn PDF document text
    • https://noduxulab.weebly.com/uploads/1/3/4/9/134901810/jebawudasoveg.pdfIn PDF document text
    • https://magenudelekoj.weebly.com/uploads/1/3/5/9/135975171/xeragu.pdfIn PDF document text
    • https://katibaluzopoxu.weebly.com/uploads/1/3/0/7/130738884/tivoke.pdfIn PDF document text
    • http://zoompol.xyz/download_music_mp3_appela4p.pdfIn PDF document text
    • https://nenejiremox.weebly.com/uploads/1/3/0/9/130969141/6764031.pdfIn PDF document text
    • https://kixumiziri.weebly.com/uploads/1/3/2/6/132681985/peraxovew_rixonilozeven_zuvom_losifadiz.pdfIn PDF document text
    • https://bojibelatos.weebly.com/uploads/1/3/4/0/134040608/fatutakulezixoso.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/gozifep/gogobi.pdfIn PDF document text
    • http://paritoxo.rf.gd/goweworowa.pdfIn PDF document text
    • http://tarodemeja.rf.gd/febujawonoliberulep.pdfIn PDF document text
    • http://wuselenefoz.rf.gd/cat_images_hd.pdfIn PDF document text
    • http://wasutin.epizy.com/belofipoviz.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/jepezigula.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/epf_withdrawal_form_10c_and_19.pdfIn PDF document text
    • http://difedomuki.epizy.com/71166102068.pdfIn PDF document text
    • http://muvubavove.epizy.com/pezusinuxoz.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/retirement_planning_software.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_off0000d8b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B5 5672 bytes
SHA-256: 2b0b75e5f54d2a7e3d66da792231813746f48e15b0fb318ea59003c6f61ec592
font_01_sfnt_off0000ebd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD9 10796 bytes
SHA-256: 6cb1992332a9b3fd6d6bdda436470ccde5a5bab814e0d616f125c905e00951ba