Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8fdd574312a2fbe…

MALICIOUS

PDF

71.5 KB Created: 2021-02-13 13:26:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f5063c1f81726185a64a47fa1c8be05e SHA-1: 27a8f680d5fc08012fb97809cb8bc2cf004c29d3 SHA-256: e8fdd574312a2fbee24bd1d4ed9685c6b85d64dd4ea36e004a8095bb70c13552
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://druttle.ru/wix?keyword=spanish+at+south+melbourne+market PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4456143/normal_6002d30a1c4f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428043/normal_6026cc12c387f.pdfIn PDF document text
    • http://nunanokipikade.22web.org/latest_cg_dj_songs.pdfIn PDF document text
    • https://cdn.sqhk.co/posojuvapono/jggejdj/run_race_3d_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/hjeyaci/meguv.pdfIn PDF document text
    • https://cdn.sqhk.co/pofoxubo/gf7hchb/79265932180.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482631/normal_6000a4f37dffc.pdfIn PDF document text
    • http://topagut.iblogger.org/wexusuxopexidijej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lojizaruxaz.rf.gd/13901625165.pdfIn PDF document text
    • http://siwinigap.epizy.com/guide_vtt_beaufortain.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/73288934667.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/arcsine_square_root_transformation_in_r.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/30966138709.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/vazizofafapikigil.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/is_echolalia_a_form_of_autism.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_off0000daef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAEF 5364 bytes
SHA-256: 8a7c38dd84ad61b61d7ea2254123cb65933d8eb3e481aa01fe84370f2c443274
font_01_sfnt_off0000ecfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECFB 10568 bytes
SHA-256: de09424c3f8b31e85c3b85eae6630dea0bbf81d357f773ad748df46b0f16331f