Malicious PDF — malware analysis report

Static analysis result for SHA-256 f49b6f3bce89c420…

MALICIOUS

PDF

72.8 KB Created: 2021-02-26 08:26:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4e64dcd01ac068eeece4c1695326fd81 SHA-1: fe3f2bcf31e654dc22e416089a9aebabe4a00c57 SHA-256: f49b6f3bce89c4204065979dc58065a0d2efc1eca0b1ea0a2bf5732aa87a0cfa
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/award?keyword=focusrite+scarlett+2i2+software+download+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366357/normal_601ac25b6ab71.pdfIn PDF document text
    • http://nageramuvepom.mywebcommunity.org/when_did_bc_and_ad_become_bce_and_ce.pdfIn PDF document text
    • http://xuwuvewisin.mypressonline.com/shark_duoclean_powered_lift-away_speed_vacuum_filter.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489593/normal_5fe72fb2b9daa.pdfIn PDF document text
    • http://manamuposa.getenjoyment.net/moxiji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463266/normal_602e163031ac8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422894/normal_5fe44c957794a.pdfIn PDF document text
    • https://cdn.sqhk.co/datolabevev/9pKFkv8/legokavuzugonotesesuze.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/webipejonavuv/vunanigejuzu.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/perth-_andover_weather_report.pdfIn PDF document text
    • http://sogivuwe.onlinewebshop.net/robertshaw_7200ercs_pilot_light.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/minateteguvivoxabale.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/wuxoroleg.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/mekasesusetupasawipipi.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/37929535117.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/azur_lane_jp_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/57026837497.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/wudutokaro.pdfIn PDF document text
    • http://sogivuwe.onlinewebshop.net/roxabexedul.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_off0000dcb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB5 5192 bytes
SHA-256: 56c31fbbcb571f24c79cc84a38f7d352eb4df5ea9cd8230d0ca6524687a8b35b
font_01_sfnt_off0000ee85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE85 11988 bytes
SHA-256: 5fd70ddaa0a39c51ce5573401d64a519fbecefa7ce3c7f7e308a65e8f094d097