Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6e8b697d2e3e3d0…

MALICIOUS

PDF

72.9 KB Created: 2021-03-03 02:07:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f57e9708ccf9554d9ad2524e48c8de0f SHA-1: c2f2aa560bf837b3d19584b69a4b1ed45bfa41fd SHA-256: d6e8b697d2e3e3d0dba14858fcf2071215574a825ed85606d783dcc9fdd541e0
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/award?keyword=is+star+citizen+a+game+yet PDF link annotation
    • http://jushq.pro/is_there_an_end_of_the_rainbow8fj74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378599/normal_602667748f0cf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369508/normal_5fc78b6828197.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476941/normal_600f156e39309.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415081/normal_5fd6107659cfb.pdfIn PDF document text
    • http://fdvsefwfrw.space/devusuzikamuczut3.pdfIn PDF document text
    • http://fallofelin.online/sylvania_light_bulb_guide_automzc8h.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/jeduzizonox/44454028655.pdfIn PDF document text
    • http://palezonipegodaf.epizy.com/2007_jeep_grand_cherokee_reviews_consumer_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/gay_science_nietzsche.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/98575122726.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/steam_slow_for_no_reason.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/4370173280.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_off0000e155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE155 5176 bytes
SHA-256: af94546e8084fd9840074687b7df53735587030f31b72c4fd1d982ddda015c50
font_01_sfnt_off0000f2ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2EE 10576 bytes
SHA-256: 49756ec828ec7e76c47efbe84098bc2154aed806392e9e787747b6741fe94eb4