Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a19f2aaea0dfa9e…

MALICIOUS

PDF

71.5 KB Created: 2021-03-03 08:24:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9240ccfd1f3d8dc8e6213e4fc988974f SHA-1: d79801c2ab56a19a6d7d370e6cda9bd9cdb91fb5 SHA-256: 7a19f2aaea0dfa9e45c83240ed7d76f6260aa583d90d7f43d3e34b90c2a14de5
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://leonvi.ru/award?keyword=the+essentials+of+computer+organization+and+architecture+4th+edition+pdf+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392667/normal_600d713a49b5a.pdfIn PDF document text
    • https://budozawepolok.weebly.com/uploads/1/3/4/8/134852557/3905471.pdfIn PDF document text
    • https://runumoviw.weebly.com/uploads/1/3/4/8/134854062/2988561.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412165/normal_5fd24f79307b4.pdfIn PDF document text
    • https://cdn.sqhk.co/lesasafo/jfjg8pu/61215488557.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463808/normal_5fcf510381800.pdfIn PDF document text
    • https://cdn.sqhk.co/mojafefegamo/jiOibjf/kaderalamuxulutakupuge.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384155/normal_6017d8b95612c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376875/normal_602961808463b.pdfIn PDF document text
    • https://bogonifad.weebly.com/uploads/1/3/4/1/134108647/4587584.pdfIn PDF document text
    • https://cdn.sqhk.co/dijabidasu/gcKQEhj/59639130457.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448357/normal_6029573bebd95.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382643/normal_5fcae8bad2b01.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445106/normal_5fd067f7cb15b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424991/normal_600f91e6e4e09.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/fizaxo/how_to_reset_service_reminder_on_john_deere_d130.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/xugezev.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_off0000d6e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E9 5656 bytes
SHA-256: d64d97b08bd0db4a8105c841511be6b44cbb820aa35e9e1f8727a8e1014e37b0
font_01_sfnt_off0000ea06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA06 10444 bytes
SHA-256: eaddd071c6244c6b2f137cef9aa6871b96de35d49b8e93ac52d25f0a503b4249