Malicious PDF — malware analysis report

Static analysis result for SHA-256 bae043673b07ef7c…

MALICIOUS

PDF

71.2 KB Created: 2021-02-26 11:57:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d79492ae47674c2b90f6f53dd6f8b869 SHA-1: 6db328a02bc778c0278a54eab1b77b16e340e8a0 SHA-256: bae043673b07ef7c16c72b9310f96b39b77f15688513835efd85f9079ba3af93
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://mezovuduw.ru/award?keyword=chemical+kinetics+and+dynamics+steinfeld+solutions PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4373004/normal_5ffa9a22af62f.pdfIn PDF document text
    • https://cdn.sqhk.co/jurugaguvedu/DDHxejj/senior_citizen_printable_brain_games_for_seniors_free.pdfIn PDF document text
    • https://cdn.sqhk.co/gutinisiv/ujayjaj/lol_karthus_aram_build.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/dhLy44V/kobawarati.pdfIn PDF document text
    • https://cdn.sqhk.co/josipinu/ifKjbiq/bride_and_groom_perfect_wedding_cake_topper.pdfIn PDF document text
    • https://cdn.sqhk.co/xezojutatow/d6E8hce/animated_movies_in_theaters_near_me.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413978/normal_6005bf7c181a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493553/normal_6027636fd751d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422150/normal_5ff9370ea07d3.pdfIn PDF document text
    • https://cdn.sqhk.co/fazituku/e4hfk7V/26999282956.pdfIn PDF document text
    • https://cdn.sqhk.co/mebinolopuf/5PhhdzO/melevegakave.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393209/normal_6001734db710f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489615/normal_5fcf326e95da5.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/wolawatin/ririwufis.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/56884825326.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/72542914805.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_off0000d8c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C3 5236 bytes
SHA-256: 9d945da1dfd72d3447affa7119532386ee279a16760d7556a0182aa1023b4fd0
font_01_sfnt_off0000ea74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA74 10332 bytes
SHA-256: b2c9cb5bb21c18cfe9d91002ff449eaef43d5adb26441c4ee8a1325b983b1072