Malicious PDF — malware analysis report

Static analysis result for SHA-256 143ff463b9ea8aea…

MALICIOUS

PDF

70.0 KB Created: 2021-01-24 04:47:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a4be9adb49008aeba6b75f26109ad5e8 SHA-1: 8a29be0ee7982f48e98ccb8e1f88e6add92a1b22 SHA-256: 143ff463b9ea8aea636d5fa2c34a2ee0b52e149ec51973f17ee2ee05d2512d1d
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://jottigo.ru/wb?keyword=microsoft%20word%20square%20text%20wrapping PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4404123/normal_6004a353aabbc.pdfIn PDF document text
    • https://cdn.sqhk.co/tadanopi/chcXhd9/fun_free_song_ringtones_for_android.pdfIn PDF document text
    • http://rexapeduke.66ghz.com/ponotebiraxabewepu.pdfIn PDF document text
    • http://bobixuposu.22web.org/rajafepirekidabawajupa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388065/normal_600a9adb4f666.pdfIn PDF document text
    • https://site-1171599.mozfiles.com/files/1171599/12_gatefold_template.pdfIn PDF document text
    • https://cdn.sqhk.co/vagofedewat/EhhIicF/unit_1_exploration_and_colonization_study_guide.pdfIn PDF document text
    • https://site-1173463.mozfiles.com/files/1173463/mefotikupa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403947/normal_5ff589111f5d0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475208/normal_5fcf3951b646a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484383/normal_600496d37d3cd.pdfIn PDF document text
    • http://dutuvowori.22web.org/47778682763.pdfIn PDF document text
    • https://cdn.sqhk.co/jaguwubax/haedgc0/buxamefiwirobikepasal.pdfIn PDF document text
    • https://site-1246633.mozfiles.com/files/1246633/brownie_uniform_shop_near_me.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jegajumofi.rf.gd/24541444311.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_off0000d339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD339 5580 bytes
SHA-256: c01c1bf20579eebaf8c49cc9f54e2cae20420ff0426db2e1d6bdc5e46106228e
font_01_sfnt_off0000e662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE662 10788 bytes
SHA-256: bedf6081d070dcfdd52db7ccf2a28f03338c1bf88b8b29da94646dfdc284bc4d