Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c5cad28ccc8e39b…

MALICIOUS

PDF

77.8 KB Created: 2021-02-18 23:41:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: dfdfb458539c3547716814c799955adc SHA-1: c12522901b6e7df209e626bedec8c8018faefceb SHA-256: 2c5cad28ccc8e39b3782263b6c76ea33304366a74339a0492aeccae095683470
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://baarspo.ru/123?utm_term=how+to+fix+a+laptop+monitor+that+won%2527t+turn+on PDF link annotation
    • http://borutafag.66ghz.com/ifrs_5_questions_and_answers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426059/normal_5fefcdba94ffb.pdfIn PDF document text
    • http://perikovu.iblogger.org/beat_maker_go_apk_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469641/normal_5fe26dffe92bc.pdfIn PDF document text
    • https://cdn.sqhk.co/vebapejun/AJpiiVR/ncaa_soccer_national_championship_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/zurefaxenov/b4JicWw/judapel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446378/normal_6003647809382.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376357/normal_5ffb3e094a56a.pdfIn PDF document text
    • https://cdn.sqhk.co/fiporalisu/8xi47nl/gacha_club_oc_import_codes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rutuvofogiseba.epizy.com/pivirux.pdfIn PDF document text
    • http://bidexegope.epizy.com/19117647539.pdfIn PDF document text
    • http://kamiwivexa.epizy.com/97443938641.pdfIn PDF document text
    • http://pomigipasa.epizy.com/89545986044.pdfIn PDF document text
    • http://wosimudekefa.rf.gd/kunuzutetavisufepex.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/rugipako.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_off0000f5af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5AF 5120 bytes
SHA-256: 6a82921a6ea0661f4857ba14082fde54157ffe01512c0a816b998ac3ba48335e
font_01_sfnt_off0001070b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1070B 10240 bytes
SHA-256: 70f305c9ab366f00093f9c74299c64b4cf282bbdb01aecf1ac008449639aecc5