Malicious PDF — malware analysis report

Static analysis result for SHA-256 7091eb700740e62d…

MALICIOUS

PDF

76.6 KB Created: 2021-02-08 07:54:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1d005e4054e048571b8a5e34b0bcb28b SHA-1: bebfa27f3772c02257283151a3744ab2fd4f5570 SHA-256: 7091eb700740e62d8683c90a00b45424284c15c6a0db193041f348c272cac093
176 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
  • 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.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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/123?utm_term=baofeng+bf-888s+review PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370275/normal_6005017234c0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496616/normal_601b4e8aa6492.pdfIn PDF document text
    • http://hookup756.fun/xokowobalopipazadud3rnye.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449615/normal_5ffb58dbde0d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377102/normal_5fee6a34d9edf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411701/normal_5fdff1e056e40.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374703/normal_5ff9bf512508f.pdfIn PDF document text
    • http://securitycheckingbrowservkcom.xyz/914274528399c5wh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tutunod.epizy.com/15932792783.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/78397134639.pdfIn PDF document text
    • http://xubevudedugo.epizy.com/meat_buyers_guide_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/chelate_complex_formation.pdfIn PDF document text
    • https://s3.amazonaws.com/zulezov/accident_incident_report_form_qld.pdfIn PDF document text
    • http://tixuxunu.epizy.com/sibod.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/50116313424.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_off0000ee23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE23 5472 bytes
SHA-256: 509353052c51dc7433e2461a287eb251faa2bca7a6080177c055ed3018974477
font_01_sfnt_off000100eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100EB 10780 bytes
SHA-256: 578181c71fd8f132b4fb6eda71cee73c5318417eca09c8ffadbc63c160221a94