Malicious PDF — malware analysis report

Static analysis result for SHA-256 dce7700574fe28b0…

MALICIOUS

PDF

72.3 KB Created: 2021-02-14 00:54:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8a49b42bcab48e6583de1ab8387e77e6 SHA-1: 260fe451e6671f7e7bf3d65ee57b73d94805d046 SHA-256: dce7700574fe28b0a2201e48c6fa0d6e2a7f5d37c2ca251f560e5ea7fd6d6026
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://druttle.ru/123?utm_term=running+on+empty+overcome+your+childhood+emotional+neglect+by+jonice+webb PDF link annotation
    • https://cdn.sqhk.co/niserutom/iNjfhde/kosejekasuru.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372074/normal_5fe35782310ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444117/normal_600e42ded2273.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444869/normal_6016fc98e88bc.pdfIn PDF document text
    • https://cdn.sqhk.co/nipigagavadu/ETjjZgc/university_of_miami_library_room_reservations.pdfIn PDF document text
    • http://thesimplycompleteseries.com/never_gone_eng_sub_ep_1_fulltcsy4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408584/normal_5fd2692f6aa90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368972/normal_60267ee924cbb.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/dazutun/provision_for_reinstatement_cost_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/everyone_can_create_video_project_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/birmingham_new_street_platform_arrivals.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/fitipibatule.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/41171808034.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/viparupepuregunasoduv.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwuzerijofa/nigivejufijulonow.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_off0000dbab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAB 5788 bytes
SHA-256: 2a735050b90a3f4231f511a6b66848cf8370609fdc7454b73ca80b4de8053e31
font_01_sfnt_off0000ef5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF5A 10572 bytes
SHA-256: 47bf0a1a114d4f0823baf681a113953cb22cbf1af71119c4da42467dd5a77581