Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aa88b5f185af059…

MALICIOUS

PDF

64.4 KB Created: 2021-02-19 06:30:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9df8cf777a92eb326db3f29339debe52 SHA-1: f75c30df98e650eb98b52c9f6aed919e0591f250 SHA-256: 4aa88b5f185af059899cd427a8de0f613f4d1cef3d10cbbf93a2f38fb53c3c57
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://seumenha.ru/aws?utm_term=jesus+mi+fiel+amigo+tablatura PDF link annotation
    • http://salukapebuke.iblogger.org/free_creative_writing_worksheets_for_grade_3.pdfIn PDF document text
    • http://carinsusa.com/fezanowijidozitaretlgt0.pdfIn PDF document text
    • http://fsbsiod.com/aqa_a_level_biology_revision_notesu8unr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416934/normal_5fcd5449ba8d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499999/normal_6017253bd89d7.pdfIn PDF document text
    • http://itdiscount.info/tutafikalohwyze.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486346/normal_5fc81a80affde.pdfIn PDF document text
    • http://verifybadgesbusiness.com/reaccin_de_combustion_completa_del_propanob113u.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383452/normal_600e5a84b0a04.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/novifamigot/talking_tom_app_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/joxita.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/totazibozenawe.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/futowi.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/cadillac_xts_review_consumer_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/92299173329.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_off0000c07f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC07F 5216 bytes
SHA-256: a0c01a4ab1a857cd4353e2700c02913b87bf947caa14c34a2987b790bf03e0f5
font_01_sfnt_off0000d227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD227 10124 bytes
SHA-256: 99ff59b88601867365e80816a1b6d2d86758c3dca6b0b82d8301e9894c3c6a95