Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4833f825f9477aa…

MALICIOUS

PDF

77.8 KB Created: 2021-02-19 19:44:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 192375f47a038fde464cc6e558e51798 SHA-1: deafe3b2e3ac503e13222ce71dd47a8e46164bc0 SHA-256: e4833f825f9477aab493c76752109219dcbabdd9c148d2d0185e2cc0390bfc61
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=partes+de+la+llanta+de+un+carro+en+ingles PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4413474/normal_5ffd80f5c7036.pdfIn PDF document text
    • https://cdn.sqhk.co/tudusiki/jeMFkgh/58220846909.pdfIn PDF document text
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/69f3a2181d368d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474750/normal_6008a9fd68bee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473642/normal_5feb20e939ff2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413735/normal_5fcf591ce844d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381090/normal_5fd05ffb417af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378390/normal_5fd1eed56e2cb.pdfIn PDF document text
    • https://cdn.sqhk.co/konafomaz/gIhgjbh/fafabajupulegis.pdfIn PDF document text
    • https://cdn.sqhk.co/kufagilan/ghUVqic/bad_piggies_new_version_free_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/totafeta/izDggje/32508657707.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/gajabedafot/migraine_treatment_guidelines_aafp.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/74852899959.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/buxosugizadubakadenuzuger.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/tenufapatifuferobif.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_off0000f1ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CA 5108 bytes
SHA-256: 9c686eeb397587aada8170dd1147e75924cf2e60fc86bb3e58cee68c7faa4a66
font_01_sfnt_off00010332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10332 11592 bytes
SHA-256: 23b469ba77c45abd7132f47da95780f9eb521a185ce9d3c8bce04915e1208ea7