Malicious PDF — malware analysis report

Static analysis result for SHA-256 07a4b3b35aaaee7f…

MALICIOUS

PDF

66.8 KB Created: 2021-02-23 12:46:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 92cf5713999acb4b805181e165fbb9e9 SHA-1: 9726d777e731890ea70ec6984112b9f6d6fa0d9b SHA-256: 07a4b3b35aaaee7f4a39a7e4272cc8ab511dc75f20f517aba070c8768e989cc3
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://druttle.ru/wix?keyword=simulated+beadlock+rings+20 PDF link annotation
    • http://ukranews.icu/midea_washing_machine_service_manual62t9j.pdfIn PDF document text
    • http://goodsfor.life/105304551754psga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451217/normal_6030d7c56a388.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379363/normal_5fff532168c22.pdfIn PDF document text
    • http://xxlmature.site/plug_dj_bot_commands90gyt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478946/normal_5fcb657f701da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462341/normal_5fe62be138685.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/fowonaxul/sound_volume_apps_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/jarawofekixifejetevavir.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/autocad_2014_64_bit_installer.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/makipivizuje.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/wobozekememu.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/brown_s_nautical_almanac_2013.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_off0000c5af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5AF 5840 bytes
SHA-256: d433d7a300381f9714afc3388ca6328db8a8bed428c97d75094f2dc014561d84
font_01_sfnt_off0000d970.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD970 10488 bytes
SHA-256: 7d96ecaab68c26272c69a7d4f0e9d751c264f8bb85f8ec74eef13f7ead3f1af3